Power Supply: 3 AA alkaline batteries
Battery Life: Approx. 12 months Static Current: 20 A
Dynamic Current: 200 mA Working Temperature: -15 ~ +55
Working Humidity: 20% ~ 95% RH Low Voltage Alert: 3.7V +/-0.2V
Card Compatibility: Mifare1 (13.56MHz)
Door Thickness: 9-22mm (for wooden doors)
0-9mm (for metal door)