Smoke-Alarm CO-Alarm AC/DC 60Hz Wire-In With 9V-Battery Backup

This smoke and CO combination alarm eliminates the need for 2 electrical boxes and features a permanently installed CO sensor and dual ionization smoke sensor, separate visual and audible smoke and CO indication to eliminate confusion, Ingelligent Sensing Technology for fewer nuisance alarms, smart 3-wire interconnect sends a unique signal for smoke and CO on 1 interconnect wire, connection to AC power is made with a Quick-Connect wiring harness. Also incluedes an 85dB horn, 9V battery backup, 2 silence features: Can silence the low battery chirp for up to 8 hours or temporarily silence an unwanted alarm, interconnectable with up to 18 devices. 120V AC/DC. Limited 5 year warranty. UL listed. Not for sale in Vermont or Oregon.