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<img width="94" height="177" alt="S301-D2 Nitrogen dioxide (NO2) sensor" decoding="async" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301D2-9.png" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="94" height="177" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-D2 Nitrogen dioxide (NO2) sensor" decoding="async" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301D2-9.png" />

S301-D2 Nitrogen dioxide (NO2) sensor

S301-D2 Nitrogen dioxide (NO2) sensor

S301-D2 Nitrogen dioxide (NO2) sensor for use with 301-EM or 301EM-20 Junction Box

<img width="94" height="177" alt="S301-D2 Oxygen (O2) sensor" decoding="async" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301D2-11.png" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="94" height="177" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-D2 Oxygen (O2) sensor" decoding="async" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301D2-11.png" />

S301-D2 Oxygen (O2) sensor

S301-D2 Oxygen (O2) sensor

S301-D2 Oxygen (O2) sensor for use with 301-EM or 301EM-20 Junction Box

<img width="94" height="177" alt="S301-D2 Sulfur dioxide (SO2) sensor" decoding="async" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301D2-12.png" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="94" height="177" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-D2 Sulfur dioxide (SO2) sensor" decoding="async" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301D2-12.png" />

S301-D2 Sulfur dioxide (SO2) sensor

S301-D2 Sulfur dioxide (SO2) sensor

S301-D2 Sulfur dioxide (SO2) sensor for use with 301-EM or 301EM-20 Junction Box

<img width="300" height="300" alt="S301-IRF R11 refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R11 refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-1-300x300.jpg" />

S301-IRF R11 refrigerant gas sensor

S301-IRF R11 refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R123 refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R123 refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-2-300x300.jpg" />

S301-IRF R123 refrigerant gas sensor

S301-IRF R123 refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R1233ZD refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R1233ZD refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-12-300x300.jpg" />

S301-IRF R1233ZD refrigerant gas sensor

S301-IRF R1233ZD refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R1234ZE refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R1234ZE refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-13-300x300.jpg" />

S301-IRF R1234ZE refrigerant gas sensor

S301-IRF R1234ZE refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R125 refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R125 refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-3-300x300.jpg" />

S301-IRF R125 refrigerant gas sensor

S301-IRF R125 refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R134a refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R134a refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-4-300x300.jpg" />

S301-IRF R134a refrigerant gas sensor

S301-IRF R134a refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R22 refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R22 refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-5-300x300.jpg" />

S301-IRF R22 refrigerant gas sensor

S301-IRF R22 refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R404a refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R404a refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-6-300x300.jpg" />

S301-IRF R404a refrigerant gas sensor

S301-IRF R404a refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R407c refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R407c refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-7-300x300.jpg" />

S301-IRF R407c refrigerant gas sensor

S301-IRF R407c refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R410a refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R410a refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-8-300x300.jpg" />

S301-IRF R410a refrigerant gas sensor

S301-IRF R410a refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R4310 refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R4310 refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-9-300x300.jpg" />

S301-IRF R4310 refrigerant gas sensor

S301-IRF R4310 refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R507a refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R507a refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-10-300x300.jpg" />

S301-IRF R507a refrigerant gas sensor

S301-IRF R507a refrigerant gas sensor

<img width="300" height="300" alt="S301-IRF R514a refrigerant gas sensor" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11.jpg 850w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="attachment-woocommerce_thumbnail size-woocommerce_thumbnail echo-lazy-loading" alt="S301-IRF R514a refrigerant gas sensor" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-600x600.jpg 600w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-768x768.jpg 768w, https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11.jpg 850w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2021/01/S301-IRF-11-300x300.jpg" />

S301-IRF R514a refrigerant gas sensor

S301-IRF R514a refrigerant gas sensor

<img width="300" height="300" alt="Placeholder" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="woocommerce-placeholder wp-post-image echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" alt="Placeholder" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="woocommerce-placeholder wp-post-image echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" alt="Placeholder" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="woocommerce-placeholder wp-post-image echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="woocommerce-placeholder wp-post-image echo-lazy-loading" alt="Placeholder" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" />

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Vertical Stack Light Mounting Base

Vertical Stack Light Mounting Base

<img width="300" height="300" alt="Placeholder" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="woocommerce-placeholder wp-post-image echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" alt="Placeholder" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="woocommerce-placeholder wp-post-image echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" alt="Placeholder" decoding="async" data-srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" data-src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" data-sizes="(max-width: 300px) 100vw, 300px" class="woocommerce-placeholder wp-post-image echo-lazy-loading lazyload" src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==" /><noscript><img width="300" height="300" src="https://www.bomarkinstruments.com/wp-content/themes/mediacenter/assets/images/blank.gif" class="woocommerce-placeholder wp-post-image echo-lazy-loading" alt="Placeholder" decoding="async" srcset="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg 300w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-100x100.jpg 100w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-150x150.jpg 150w, https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo.jpg 500w" sizes="(max-width: 300px) 100vw, 300px" data-echo="https://www.bomarkinstruments.com/wp-content/uploads/2020/10/bomark-logo-300x300.jpg" />

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Vertical Stack Light Mounting Base w/cap

Vertical Stack Light Mounting Base w/cap

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