Smart Door Lock Biometric fingerprint Key phone APP Electric Handle Lock USB Battery Home/Office/Loft Wooden door  Note: To make sure you are able to use Alexa and Google home tocontrol Lock, please search TTLock in Alexa and ScienerSmart in Google home First. If it's found in Alexa or Google home, then there is no problem to use.  Please note this lock is powered by 4 No.7 batteries and batteries are removed from the package. Lock is not waterproof. Kit1: Lock only (Unlock by fingerprint, TTlock Bluetooth, Code, key), 60-70mm single latch Kit2: Lock +Gateway (Unlock by fingerprint, TTlock wifi, Code, key, also suppport work with Google home and Alexa),60-70mm single latch Kit3: Lock only (Unlock by fingerprint, TTlock-Bluetooth, Code, key), 22*170(4558) double latch Kit4: Lock +Gateway (Unlock by fingerprint, TTlock wifi, Code, key, also suppport work with Google home and Alexa), 22*170(4558) double latch Here the lock we present is standard version: support unlock with fingerprint and phone APP(Bluetooth, TTLOCK). include a 60-70mm lock tongue. ◊ Unlock ways: fingerprint, phone APP (Bluetooth,TTLOCK), code and key . ◊ Suit for door thickness between 35-55mm ◊ Material Made: Zinc alloy ◊ Smart handle design: The handle inside contains the fingerprint sensor, the chips, battery, and clutch components.  ◊ Up to 100 fingerprint users ◊ Power supply: 4 No.7 batteries (Not included) . Emergency power with USB port. ◊ The most convenient way of unlocking: Press the fingerprint sensor and turn the handle to unlock.  ◊ Easy to install. No wire connection is needed. ◊ Suit for right push or pull and left push or pull direction to open door. ◊ Application: Home,Office,Apartment, Department                             TTLock function           Lock function with Gateway (Optional)  With gateway, you can control the lock by Wifi or cellular data, unlock it whithout distance limitation 1 gateway can control multiple locks, as long as lock is the in the effectve range. Also, with gateway, you can achieve control lock by Alexa or Google assistant. Search TTLock in Alex, and Search Sciener smart in Google assistant. Any other help feel free to contact me.               For other type of lock, you csan click image below