This is a video showing the powering-up, a bump test of the standard sensors [hydrogen sulfide (H2S), carbon monoxide (CO), and methane (CH4)], a bump test of the photo-ionization sensor/detector (PID), a little demonstration and the powering-down of the unit.

The oxygen sensors (O2) for these products have a short lifespan (~2 years) relative to the much longer lifespan of the other sensors. The O2 sensor has been disabled in the user settings.

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