What is the process of testing a good carbon monoxide detector ?

We SUMRING(Complete fire alarm solution factory for over 15 years) recommends families test good carbon monoxide detector once a month. Doing so is a straightforward process: 1.Hold down your good carbon monoxide detector’s “test” button. 2.Wait until you hear two beeps, and release the button. 3.Hold down the detector’s “test” button once more. 4.Wait until you hear […]