Smoke and Carbon Monoxide Alarm, Battery Chemistry Lithium, Battery Location Back, Battery Locking Pin Yes, Battery Size 3V, Communication Protocol Not Applicable, Compatible With Not Applicable, Detector Type Smoke/CO Detector, Features Voice Alert, Includes Mounting Bracket, Number of Tandem Detectors 0, Power Source Sealed Battery, Sensor Type Electrochemical, Photoelectric, Visual Alert Type Alarm Indicator, Dual Power Indicator Light, Volume Level 85 dB @ 10 ft, Alert Type Sound
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