Very Easy To Install At Home Or Bedroom. Precise Electro-optical Sensor, High Consistency And Stability, Move, Or In The Same Place For That. Loud Enough And Sounds Good.
The Alarm Sound Pattern Is Four Short Alarm Beeps.the Red Led Will Flash While In Alarm Mode.
Powered By 3X1.5V Aa Batteries (Package Not Included Battery Powered)
Lcd Displayer With A Blue Back Ground Light.
Permanent Carbon Monoxide Sensor.lound 85 Decibel Alarm
