Note: 1. If you only buy a lock, only the remote control and the button inside the door can be used to unlock and close the lock        2. If you need a mobile phone APP to control unlocking and closing, you need to buy accessories-Bluetooth adapter or wifi adapter, you can download the mobile app to control unlocking and closing        3. If you need fingerprint recognition and password unlocking, you need to buy accessories---fingerprint password keyboard, please contact customer service for consultation                                                                             Features: 1.No lock hole design, it completely abandons the traditional key and lock, in the fully opened and closed by remote control, realized the real security. 2.Extended antenna, stronger signal, safer and more responsive. 3.Add USB external power source function. Make sure the lock works when battery (not included) was dead. 4.Three unlock modes optional: Remote control unlock, indoor button unlock,phone APP unlock.            5.Easy installation on all kind of doors, very convenient.             If you want to implement the control function of the phone app, you need to purchase Phone control option.             If you want to use fingerprint and passwork function, you need to purchase Fingerprint option(not inclue phone control)            Wifi control type can control the lock by network far from your home via phone APP.            Specification: Color: Gold&blue,silver&blue, silver(if you need other color, please tell us, or I will send silver color) Material:Zinc alloy Lock size: 15.5 x 8 x 3.5cm Controller size:6 x 3 x 1cm                                                Package List: 1* Lock 1* Lock Body Holder 1* Lock Catch 4* Remote controller 1* Bag of Mounting Screws 1* USB cable            or            1* Lock            1* Lock Body Holder 1* Lock Catch 4* Remote controller 1* Bag of Mounting Screws 1* USB cable            1* Phone cnontrol bluetooth adapter (not include power adapter)            or            1* Lock            1* Lock Body Holder 1* Lock Catch 4* Remote controller 1* Bag of Mounting Screws 1* USB cable            1* Phone cnontrol wifi adapter (not include power adapter)