Specifications 1. Touch screen keypad door lock 2. ANSI standard 3. 4*1.5V AA batteries 4. cheap price,easy operation Function •Easy installation,Easy to program and operate; •Auto Deadbolting Mortise •No external wiring required •Forged steel housing and pure stainless steel mechanical rational structure •Fully Automatic fingerprint update technology •Weatherproof: fully resistant to rain, snow, temperature extremes, humidity, UV and dust. No other biometric deadbolt can make these claims (unique feature).•Fingerprint user capacity: 100-240pcs. •Can be fingerprint, PIN and key operated •Fingerprints and PIN codes can be added or deleted individually •The door will lock automatically on closing •Panic exit function. The door can be opened from the inside at all times by using the door handle. It is never locked from the inside •Passage mode (the door can be left unlocked for free access from outside) •Powered by 4x AA 1.5v alkaline batteries which are easily replaced (always use good quality batteries) ,Battery operation with low battery alert - non-volatile memory will not delete stored fingerprints (even if batteries expire) •Energy saving design for approx 15000 openings before the batteries need replacing •Low battery alert •If batteries become too low the lock can be temporarily activated with a standard external 9v battery •Non-volatile memory ensures that there is no data loss whilst the batteries are being replaced •High security emergency override key ,Pick proof" keyholes •ADA compliant handle (Means the handle lever is curved, so it does not catch clothing) •CE and FCC approved; •Application: home, office room, store, will, lab, bank, hotel ¡¡¡¡ Touch screen keypad ,Voice navigation,handle direction interchange.