Your system is self-diagnosing and the Control Panel will alert you when any piece of equipment reports a low battery as well as that status will display on the home screen of both the Frontpoint App and website. If a Carbon Monoxide Sensor reports the low battery, follow these steps next to the picture that matches your sensor to change the battery:
This Carbon Monoxide Sensor takes 2 CR123A batteries and the typical battery life for the sensor is 3-5 years.
Rotate the body counterclockwise to remove it from the back casing.
Slide open the battery compartment to replace the 2 AAA batteries on the back of the body.
Reattach the battery cover then attach the body back to the base with a clockwise twist.
This Carbon Monoxide Sensor takes 3 AA batteries and the typical battery life for the sensor is 3-5 years.
Slide the body sideways to remove it from the back casing.
Replace the 3 AA batteries on the back of the body.
Slide the alarm body back onto the mounting plate. The mounting plate will not close if all three batteries are not installed.