Installation Guide

Make sure the batteries are properly inserted and
then wait 15 seconds.
If the alarm does not sound when you press the test
button:
Hold button down rmly for at least 5 seconds.
Check the alarm is secured correctly on the mounting
plate.
Replace batteries.
1.
2.
3.
4.
Troubleshooting
E
When the ADT Carbon Monoxide Alarm detects potentially
dangerous levels of carbon monoxide, it ashes the red
light immediately and then sounds a loud alarm if the
carbon monoxide persists.
F
Use
Alarm - Red LED
Power - Green LED
Fault - Amber LED
The below table shows how the alarm reacts to
different levels of carbon monoxide gas and exposure
time. At higher levels of carbon monoxide, the alarm
turns on sooner.