Carbon Monoxide Alarm, 85 dB at 10 ft, 110V AC/DC, Electrochemical Battery Backup: Yes

Carbon Monoxide Alarm, Battery Chemistry Alkaline, Battery Location Back, Battery Locking Pin No, Battery Size 3V, Communication Protocol Wireless, Compatible With Not Applicable, Detector Type CO Detector, Includes 3V Battery, Number of Tandem Detectors 24, Power Source Sealed Battery, Sensor Type Electrochemical, Visual Alert Type Digital Display, Volume Level 85 dB @ 10 ft, Accuracy +/-30 Percent (CO), Alarm Setting 30 ppm, Alert Type Sound, Battery Backup No, Detects Carbon Monoxide