Type : AR-WFA-CP90-SHD
Power Supply : 18650 lithium, can be selected 1200mAH-2600mAH
Battery Life : 1 Year
Sound Specification : >85dB / 3m
Ambient Temperature : 0°C ~ 70°C
Humidity : 10% ~ 90%
Active Temperature : 57°C 
Size : 112 x 112 x 40 mm
Detection Methode : Photoelectric + temperature sensor
Material : ABS Plastic
NB supports reporting information : Boot information, fire alarm, live button self-test, alarm field button reset, alarm auto reset, battery low voltage, temperature alarm, heartbeat information and event generation time.