FIRST ALERT CO400 Carbon Monoxide Alarm, Battery Power Source, Electrochemical Sensor, Audible, Visual Alarm, 85 dB Keys & Safes Saw Diameter: 3-3/4

Saw Diameter: 3-3/4

042 in Thick

3-1/2 in Saw Diameter

Overall Depth: 33

Coverage Area: 100 to 175 sq-ft/gal Rough Wood

FIRST ALERT CO400 Carbon Monoxide Alarm, Battery Power Source, Electrochemical Sensor, Audible, Visual Alarm, 85 dB Keys & Safes Saw Diameter: 3-3/4FIRST 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