Multiple unlock modes : Fingerprint, Password, Smart Card and Remote Control (for optional)
High sensitive touch keypad with backlight ,easy to oprate even in dark
Easy and clear voice operation guidance.Conforming to human function
Embedded infrared sensor automatic control fingerprint sensor power supply 
Support scramble code to protect the password 
Doorbell built in
High quality motor, Open & Close service life more than 200,000 times. 
Simple DIY installation just with a screw driver.
Powered by AA Battery（4pcs),with low battery alarm function
The error password lock protection function (5 consecutive error inputs will be locked for 1 minutes). 
Support external emergency battery input.