Battery: Two 1.5V No.7 batteries (Nanfu batteries are recommended)
Battery life: 1 year
Working voltage: DC2.7～3.3V
Quiescent current: ≤20uA;
Report turtle current: ≤150mA
Wireless transmission method: telecommunication, mobile NB-iot network
Induction distance: <30mm
LED light status: door open: red light flashes quickly; door closed: green light flashes quickly;
Communication is normal: green light flashes
Working temperature: -10°C～+50°℃
