【3 Ways To Unlock】 Multi-function of Fingerprint Unlock, Code Unlock, Mechanical Key Unlock, It can enter 100 fingerprints, Eliminate the trouble of forgetting to bring the key when you go out.<br><br> 【Easy to install】 No wiring and no drilling. quickly and easily install the lock just with a small screwdriver, Adjustable latch. Both the left and right doors are suitable. Fits for most standard residential door, or apartment, office, etc.<br><br> 【Safe And Reliable】 Fingerprint 0.3S unlocking and the recognition rate up to 99%, 3 seconds Automatically locked after unlocking, Stainless steel door lock is sturdy and tamper-proof.<br><br> 【Low energy power supply】 It needs 4 section AAA alkaline batteries, works about 1 year,USB cable to unlock as emergency charging, so never care about batteries runs out<br><br> 【Standard door locks size】 Fits for most standard residential door, Equipped with two square steel, according to the thickness of the door using one of the installation,applicable door thickness between 35mm to 55mm (1.4 to 2.2in) 55mm to 75mm(2.2 to 2.9in) and the adjustable deadbolt mortise 60mm to 70mm (2.36 to 2.75in),Check your door size before order