First Alert SA511CN2-3ST Wireless Interconnected Smoke Alarm with Voice Location, Battery Operated, 2 Pack , WHITE
- Smoke detector carbon monoxide detector combo – sounds loud 85 decibel alarm with voice alerts that announce "Fire! Fire!" or "Warning! Carbon Monoxide!".
- Hardwired with backup battery - combo smoke and carbon monoxide detector is hardwired into a 120V power source with 9V battery backup.
- Easy installation – battery door is on the front for quick replacement.
- Photoelectric smoke detector senses visible fire particles and electrochemical CO detector provides accurate readings.
- Will interconnect with up to 24 other devices including smoke, CO and heat alarms.