Technical and Functional Index:
Front panel material: zinc alloy, Back panel material: plastic
Power supply: DC4.5V. Use of 3 pieces of No. 5(or No. 7) AA alkaline batteries, with low voltage warning.
Static consumption: 3uA Max.
Dynamic Consumption: About 250mA
Battery life: 10000 times. Under low voltage warning, it can open door 150 times at least.
Working temperature: -20º C--70º C, humility: 98% Max.