Keyless door entry intelligent lock has no keyholes outside,there is no way for thieves.The thief may not know how to open the lock,only your own remote control can control the unlocking.It was made by good quality zinc alloy and has stable performance.It has the advantages of high strength,corrosion resistance and drop resistance.Has a long service life and will not be easily damaged.Features:【SAFE AND STABLE】Remote control electronic lock with tiger lock method,more safe and stable.【EASY FOR INSTALLATION】Remote control door lock with super design and easy for installation.It is easy to use,and you can complete its installation by yourself without too much effort.Specification:Host Machine:Material: Zinc AlloySize: 15.5 * 8 * 3.5cmPower Supply: 2 * AA batteries(not included)Transmission Frequency: 433MHz（±500KHz）Operation Range: Within 20mUnlock Mode: Remote control unlock& Mobile Phone Unlocking (additional Bluetooth adapter is required)Remote Controller:Color:SilverSize(Each): 6 * 3 * 1cmBattery(Each): 1 * CR2032 3V(Included)Standard Number: 4 (included)Maximum Controller Number: 16 (not included)Function: Lock & UnlockPackage List:1 * Lock(Not included batteries)1 * Lock Body Holder1 * Lock Catch4 * Remote controller(Built-in batteries)1 * Bag of Mounting Screws1 * USB Cable3 * Fixed Sticker1 * Manual