Size

Diameter :125mm
Height :35mm

Sensitivity of Smoke ⅡGrade
Emission Distance Open ≥ 120m
Emission Frequency 433MHz 
Decibel  > 85 dB 
Power Supply 9V Battery 
Working Temperure -10℃~50℃
Interface Temperatrue of Air  10%-90%RH
Alarm Current ≤ 40MA
Standby Current ≤ 10uA

Smart Wireless Smoke Detector Fire Alarm Sensor.