This item adopts high-quality iron, Iron wire drawing process, lock body surface anti-corrosion, which is durable and beautiful. It can be used compatible with the signals of all building intercom system and access control system. And it is suitable for residential buildings, public door, organs, schools, hotel building, factory warehouse and other departments. What are you waiting for?Features:Suitable for residential buildings, public door, organs, schools, hotel building, factory warehouse and other departments. High-quality iron, Iron wire drawing process, lock body surface anti-corrosion, durable and beautiful. It can be used compatible with the signals of all building intercom system and access control system. With long working lifetime (above 500,000 times), high sensitive,ON/0F. No collision - reduce the choice of door closers and will not louder collision sound that the door is not easily deformed. Mistakely unlock or unlock without entering,the door can be locked within 5-8seconds. Unit has two wires running from it for electronic access. With electronic-control unlocking unit and a spring adjusting balance unit. Support manual unlocking, 3 keys included. When the bolt extends out after door open, it can be draw back and the door can be locked normally. It prefects for left door, right door,inner door, outer door and other various door. No direction - No need to identify the direction of opening the door, open the door inside and outside, can be universal (easy to buy locks and reduce inventory) Low power consumption - power consumption is only equivalent to one-fifth of the electronic lock, The current of the lock of the spiritual lock is less than 0.5A, which reduces the power consumption of the host and the host. The sound is light - the door is automatically locked, no noise. High anti-theft and high safety. Easy to install. Specification:Item Type: Smart LockMaterial: Nickel-platingColor: SilverItem Size: 13.5 * 10 * 4.5cm/5.3 * 3.9 * 1.8inchUnlock time: 5sWorking Voltage: DC12VWorking Current: 200mAPackage List:1 * Electric lock1 * Forend cap1 * Installation package1 * User manualNote:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.