YRHAND Smart Lock A220 Deadbolt Door Locks,Smart Deadbolt Lock Keyless Entry Door Lock with Keypad,TTLock APP,Code,Card

【Fast unlock】1~1.5 seconds unlock by IC Card,passcode,free APP（TT lock app),wristband,mechanical key.The door lock make it more flexible.
【Total Security via App】TT lock app allows you to send eKeys to friends or families,check unlock history,and manage access anytime anywhere.Perfect for a variety of security situations, even rental and sublet property!
【Automatic door lock】Never worry about if you forgot to lock the door - Enable Auto-Relock to ensure the door always locks behind you.(set by TT lock app)
【Security and control from anywhere】Paired with WiFi Gateway (Optional add-on,sold separately,Asin:B097GK9TKC),remotely lock and unlock your door and set up codes or simply check status from anywhere using the mobile app.
【Longer Life's pan】Both the front and back panel of this smart digital door locks are made of Aluminum,ABS,Acrylic.A220 smart deadbolt lock requires 4 AA batteries for operation (Not Included).which use in 10000 times normal unlock (12 months)