Kidde i4618-A Hardwired Ionization Smoke Alarm (120v) w/ Alkaline Battery Backup

Features: Front battery pull tab allows battery activation without removing alarm from mounting bracket. Large mounting base makes mounting easier, protects surface paint from dirt and covers imperfections. Pre-stripped wiring harness with easy off cap does not require stripper tool. Tinned strands increase conductivity and wire nut grip. Large centrally located Test/Hush® alarm control button. Dust cover protects sensor from contaminates during construction reducing nuisance alarms. Easy access front loading battery door attery backup provides protection in case of power failure. Interconnectable with up to 24 devices (of which 18 can be initiating) including smoke, CO and heat alarms. See user’s guide for complete instructions.