Detailed Product Description Features: 1) Power: 6V (4-parcel alkaline 5-sized battery and 1-year endurance) 2) Static consumption of power: <20uA 3) Dynamic consumption of power: >180?0mA 4) Under-voltage index: automatic under-voltage alarming when power supply drops to 4.5V, the door can be reopened 100 times 5) Working temperature: -20癈 - 70癈 6) Working humidity: 20% - 85% 7) Static anti-electricity capability: >15,000V 8) Thickness of door available: 36 - 75mm (over 9cm width of convex-concave door edge) 9) Weight: 2.7kg 10) Size: a) Entire lock: 281 x 100 x 70mm b) Lock core: 125 x 80 x 20mm