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.Specifications:Remote Control Distance: 10m/32.8ftPower Supply: Power Supply: 4* 12V 27A Battery for Remote Control (included), 1* 23A 12V Battery (included) & 4* AA Battery (Not Included) for Door LockUnlock Current: 100mAhBattery Life: 4 batteries last for 16 months in standby modeWorking Temperature: -20-70Working Humidity: 20%-80%Lock Tongue Moving Distance: 23mm/0.90inMaterial: Stainless SteelPackage Size: 23.0*17.0*6.5cm/9.05*6.69*2.55inPackage Weight: 1056g/37.24ozPackage List:1* Door Lock1* Bottom Gusset Plate1* Door Bolt Holder1* Screw Kit1* 23A 12V Battery4* Remote Controller1* English-Chinese User Manual