Material Aluminium Alloy and Tempered Glass Capacity Face: 50 IC S50 Card: 50 Fingerprint: 100 Password: 50 Events Log Access events records by ZSmart APP Doorbell calling history; Wrong Password Alert; Remote unlocking history (Free cloud storage for 6 months) Face Recognition Technology 3D Structured Light Facial Recognition Communication IEEE 802.11b/g/n (2.4GHz Wi-Fi) Facial Recognition Speed <1s Facial Recognition Distance 0.5m to 1m Supported Application  ZSmart App Video Camera 1280*720 pixel Display LCD Screen 3.5 inch, 640*480 pixel Power Supply 4,200mA;  lithium battery Emergency Interface Micro USB 5V Mortise Type Chinese standard mortise (6068) MCBF >100,000 Door Thickness 45mm to 60mm (customizable) Static Current <80uA Operating Temperature -25°C to 75°C Operating Humidity 20% to 90%RH (Non-condensing) Random Password