FIRST ALERT CO400 Carbon Monoxide Alarm, Battery Power Source, Electrochemical Sensor, Audible, Visual Alarm, 85 dB Keys & Safes 3-1/2 in Saw Diameter

3-1/2 in Saw Diameter

Overall Depth: 33

Reinforced carbide head for increased durability

T4819/LEDIF/41 Bulb Designation

FIRST ALERT CO400 Carbon Monoxide Alarm, Battery Power Source, Electrochemical Sensor, Audible, Visual Alarm, 85 dB Keys & Safes 3-1/2 in Saw DiameterFIRST ALERT Carbon Monoxide Alarm, Electrochemical Detection Method, Battery, Audible, Visual Alarm, 85 dB Sound Level, Electrochemical Sensor, Wall Mounting, White, 40 to 100 deg F, 3. 4 in Width, 1 1 2 in Height, 5 in Depth, Additional Information: Uses (1) 9 V BatteryFeatures: Alerts you to CO threats the first ALERT battery operated carbon monoxide alarm uses an advanced electrochemical CO sensor to detect elevated carbon monoxide levels, when CO