How can the Carbon Monoxide detector be checked?

carbon monoxide detectors plug in image

eladyah

I am interested in a valid procedure for testing the Carbon Monoxide detector element in a typical 120v plug-in CO Alarm device. My question is with respect to the CO detector itself not the push button test feature most units have. This only checks the electrical operation of the device not it's ability to detect the gas

Answer
if it is a plug-in unit get an extension cord and hold it up to your car muffler with your car running.

what will carbon monoxide detector sound like if there is CO in home?

Chloegirl

I just plugged in a first alert carbon monoxide detector down in basement. The horn will sound once or twice every 20 minutes or so and the red light will flash every so often also. Is this a malfunction or is there CO in my home?

Answer
A very load chirping noise.

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