ZKTeco Biometric Fingerprint Door Lock Digital Keyless Locks Keypad Lockset with 5PCS RFID Cards,Right Handed. Four ways to unlock: Fingerprint, user code/password, ID card, mechanical key. Support up to 100 fingerprints and 100 ID cards(Suggest Operating Temperature:&gt;=32). Fit Doors:Backset 2.36(60mm),Door thickness between 1.38(30mm) and 2.16(55mm),We suggest ask Locksmith to install this lock. Installation Video : Search ZKTeco TL100 on Youtube. Support Normal Open: Keep at unlocking state in this mode. Just press the handle to open the door. Idle Handle Design:To prevent from forcible entry.Turn handle upward to lock deadbolt. Low Battery Alarm, Illegal Operation Alarm.Voice guide for easier and more convenient use. Not Waterproof and Not Reversible: Be careful when choose the left or right handle lever.This Lock is Not Waterproof and it's only for indoor use. 6 holes need to be drilled while the lock is installed. So it wouldn&#039;t be a good choice if your door can not be drilled Please use ALKALINE BATTERY only The mortise hole needs to be drilled wider based on America standard mortise hole Please confirm your door open direction before purchase.This item is for right open direction. Suggest operating temperature is &gt;=32,The cold temperature might effect the sensitivity of the fingerprint scanner NOTE: This Lock is not waterproof and it&#039;s only for indoor use. New generation fingerprint recognition algorithm With voice-guided feature for easy and quick operations Anti-theft mortise with one latch and two security deadbolts Idle handle design to prevent forcible entry Reversible design to accommodate all door open directions Registration data are stored even if there is power loss Various accesses for your convenience - fingerprint/password /card /key Illuminated keypad for easy operations in the dark With random password feature for higher security Data upload/download via USB port External terminals to draw back-up power from a 9V battery Support passage mode - Normal Open 125khz ID card reader is standard New lock is configured to grant ANY fingerprint access to unlock. Please register one administrator at least for the new installed lock, If there is no any administrator, registration for normal users and temporary users are not allowed. The lock is equipped with mechanical keys for manual unlocking. Remove mechanical keys from the package and keep them in a safe place. To power on the lock, eight alkaline AA batteries (not included) are required.Non-alkaline and rechargeable batteries ARE NOT RECOMMENDED. Do not remove batteries when the lock is in working state. Please replace the battery soon when the lock prompts the voice of low battery. The operation of setting lock has a stand-by time limit of 10 seconds. Without any activity, lock will shut off automatically. Keep your fingers clean when using this lock.