Smoke Alarm Detector Sensor Hoisting Mounted Wall Mounted Fire Sound Alarm

Features Battery Operated 2 1 5V AAA batteries CR 17335 battery Operating Light LED Flashes approximately every 8 seconds confirming unit is powered Low Battery Warning Alarm beeps every 9 seconds when the battery needs replacing Alarm Pause Hush mode Sensitivity Test Button Test the sensitivity circuitry batteries horn Loud 85 Decibel Piezo Electric Alarm Automatically resets when hazardous condition has passed Easy Installation Fixings supplied Specification Power Supply 21 5V AAA battery CR 17335 batteryStatic current 10uAAlarm current 100 MAAlarm indication LED flashes in RedAlarm Sound 85db 3mTemperature 10 50℃Relative Humidity 95 RHDimensions 77 mrnDetecting area 80 Square meter at 6 12m installation height 60mat installation height 6m Size 77mm x 53mm x 53mmPackage included 1 x Smoke Detector1 x Instruction ManualDetails pictures