SC7010BA : First Alert 120V Photoelectric Smoke and Carbon Monoxide Alarm, with Battery Backup

First Alert 120V Photoelectric Smoke and CO Alarm, With Battery Back-up. The SC7010BA is an AC powered hard wired combination photoelectric smoke and carbon monoxide alarm with battery backup.

AC hardwired connection
Battery backup using 2 AA batteries (not included)
Photoelectric smoke detection
Electromechanical carbon monoxide detection
End of life signal built in
85 dB siren at 10 feet
Alarm silence button
Can interconnect with other BRK wired detectors
Maximum 18 connected detectors, of which 12 can be smoke
Alarm latch - remembers which unit went in to alarm
Tamper resistant locking pin - perfect for rentals
5 year warranty