1.Controlled by electricity, the door can be opened very quickly. 2.The inside-set controlled-circuit can efficiently avoid the man-made damage and being unlocked by the outside power-supply. 3.The inside-set controlled-circuit can efficiently avoid the man-made damage and being unlocked by the outside power-supply. 4.To unlock with the mechanical structure driven by the micro-electronics machine, instead of being driven by electrical magnetic, overcomes the shortcomings and makes the lock have a longer service-life. 5.The lock can be locked up automatically or manualy. Basic Parameter Volume: 250mm?55mm?1mm Pack Volume: 490mm?90mm?40mm Weight: 2.2kg Color: argentine Work temperature: -40癈~70癈 Work humidity: 10% ～ 90% RH Read Card Type: RF Read Card Distance: > 3cm Read Card Speed : < 0.3s Record: 255 User Card: 255 CommElectric Parameter Input Voltage: Battery:DC6V,Network:DC12V Static Current: 0.03mA unication: RS485