Carbon monoxide alarm operates on a 120V wired power source with a 9-Volt alkaline battery backup (included)
An 85-decibel alarm sounds & a red LED indicates the CO detector is sensing poisonous carbon monoxide gas
Green LED indicates power to the carbon monoxide detector, while an 85-decibel alarm & a red LED indicates the presence of carbon monoxide
Interconnection capability: allows you to connect up to 24 Kidde smoke, heat, or CO alarms, with the possibly it interconnect 6 strobe lights or relay modules
The unit will chirp at the end of the alarm life, indicating that the alarm is in need of replacement
10-Year Limited Manufacturer's Warranty on the Alarm Only: warranty begins when the CO alarm is powered on. If that date is unknown, it should be assumed that alarms should be replaced. The 10-Year limited warranty is not a battery performance claim.