Features: * Dual core and dual system, open faster, response quicker. * Two different ways to open and close, with the remote control and the spinning roulette. * Easy and firm installation with the external mounting plate. * Remote controls with digital conversation system, it cannot be decoded or duplicated. Anti-theft and bring you safety. * Made of stainless steel, provide long service life, very strong and steady. Power saving and low battery consumption. * Once the main batteries are depleted, you can use the backup battery, no worries about dead battery and be locked outside. * The bottom panel design makes installation easier and more stable. * Ideal for office, home, hotel, anti-theft door, corridor door, wooden doors, garage door, etc. * Automatic sensing 20 second locking function. * BT pairing enables mobile phone APP to control the switch of intelligent lock.