First Alert 3120B Hardwired Combination Smoke Alarm, 120 V, Ionization/photoelectric

Product Features

• Type: Hardwired, Combination
• Voltage Rating: 120 V
• Frequency Rating: 60 Hz
• Battery Size: AA
• Sensor Type: Ionization/Photoelectric
• Utilizes both ionization and photoelectric smoke sensors for maximum protection
• Two latching alarm latch and low battery latch
• Two silence alarm silence and low battery silence
• Two AA battery backup
• Optipath 360 technology
• Made for residential and institutional use as defined by standard NFPA101
• Runs during power outages with (2) AA backup batteries