The LCD screen makes it easy for you to read the concentration value, and the alarm sound ≥85DB clearly attracts your attention

You need to bring 3*AAA batteries to ensure low power consumption . If the battery is low, the LCD will show 'LB' and sound to remind you to replace the battery

After you install the battery, wait for 2 minutes and press the TEST button. The LCD screen will light up and display '0'. Long press the 'TEST' button to check the alarm concentration, and press it again to delete it. If there is no emergency, press TEST to mute

Carbon monoxide alarm conforms to EN50291 standard, simple installation, quick detection of carbon monoxide gas leakage. Can be used in the kitchen, bedroom, bathroom and other places.