About this item

• 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
• UL Certified, 10-year limited warranty
• Will interconnect with up to 24 other devices including smoke, CO and heat alarms
• Package contains six smoke and carbon monoxide detector combo units