[BEAUTIFUL & DUARABLE] : The remote control door lock with anti-rust battery box, spring is made of special material, durable in use. The lock tongue of the smart lock and main parts are made of stainless steel, without fading. The smart door lock with beautiful appearance and arc design, the lock body is relatively thin [REMOTE CONTROL] : Our deadbolt access control system unlock by remote controller, then close the door, it will lock 3s later. (No closing, no locking). The yale smart lock's remote control distance is 0-10 m. Unlocking mode of the smart locks front door include remote control unlocking and key unlocking [LOW POWER CONSUMPTION] : The smart lock internal door is power supplied by 4 * AA batteries can offer about 1 year work. This intelligent lock has Long service life, 300 thousand locking operations, no wear [NOTE] : 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 [EASY TO INSTALL] : Easy and firm installation with the external mounting plate. Remote controls with digital conversation system, it cannot be decoded or duplicated. Innovative unlocking and locking prompt tone. It is easy to install without ging in, Weight: 2.1825763938 Pounds, Manufacturer: Sonew