Features:Remote control unlocking, explosion proof lock, mechanical unlocking. Innovative unlocking and locking prompt tone. It is easy to install without plugging in. Beautiful appearance and arc design, the lock body is relatively thin.Easy and firm installation with the external mounting plate.Remote controls with digital conversation system, it cannot be decoded or duplicated.Power saving control mode, low power consumption, 4 x AA batteries can offer about 1 year work.Long service life, 300 thousand locking operations, no wear.Anti rust battery box, spring is made of special material, durable in use. The lock tongue and main parts are made of stainless steel, without fading.Under voltage lock protection function and alarm sound prompt function: The remote controller can't lock the door when the battery voltage is reduced and the power is used up (the remote controller can't lock and make 4 alarm sounds), but the remote controller can unlock normally, it should be replace the backup battery in time.Induction locking: Unlock by remote controller, then close the door, it will lock 3s later. (No closing, no locking.) Specification:Condition: 100 percent Brand NewMaterial: Stainless steel Color: Silver Unlocking mode: Remote control unlocking and Key unlocking Remote control features: the system and the remote controller for matching use, only the remote control which has successful codes can unlock, each lock can match multiple remote controller. Anti theft performance: Anti technical opening, Anti master key unlock, Anti card unlock, Anti violence damage. Password Level: Encrypted transform digital signal, can not be deciphered.Remote control distance: 0-20 mNumber of operations: 300 thousand Power supply: 4 x AA batteries(not included), emergency power supply for remote controller Battery Service Life: About 1 year Unlocking current: 120 mA Use environment: temperature: -1080, humidity: 20 percent 80 percent Item Size: As Pictures Shown Package Weight: Approx. 986 gPackage Include:1 x Lock (Main Body and Lock Tongue, built-in a 23A 12Vbattery )1 x Bag of Screws 4 x Remote Controller (with Built-in Button Batteries)1 x Pack of Installing Tools1 x Wireless WIFI Nut 1 x Manual.Note: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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store