▪ 120V AC With Two AA Battery Backup
▪ Dual Smoke Sensing Technology: Photoelectric And Ionization Smoke Sensors
▪ Two Latching Features
▪ Alarm Latch: Remembers And Identifies Initiating Alarms, Low Battery: Identifies Affected Unit
▪ Two Silence Features: Silences Low Battery Chirps For Up To 8 Hours Or Temporarily Silences Nuisance Alarms
▪ 10-Year Limited Warranty
▪ Mfg #3120BA