China digital electronic lock supplier: digital electronic locks, different color finish available, keypad locks function by entry of a 4-digit code. Specifications: - Material: ABS plastic. - Door thickness: 1.2mm. - Finished: white, different color available. Features: 1. Keypad locks function by entry of a 4-digit code. 2. Power supply: 3 X AA alkaline batteries. 3. Input Voltage: DC4.5V 3.Battery life: 20months. 4. Undervoltage alarm point 3.3±0.2V. 5. Use condition: temperature: -15â??~65â??ï¼?humidity:5%~95%. 6. Working modes: Master code, Jump code and User code. 7. Emergency power supply.