Smart Lock Keyless Entry Deadbolt Door Lock, Digital Bluetooth Lock w/Keypad&APP

Lock & unlock w/Smartphone, Keypad, & Mechanical Key. Control keyless access & keep track of comings & goings, from phone.
Grant access for a few weeks, hours, or minutes, & revoke access whenever needed. Give a temporary code to guests, visitors, housekeepers or employees. Never worry about lost, stolen or copied keys again.
Locks automatically as you leave. Smart Lock set out to provide extra home security w/auto lock (5-120s, Customize) to keep your house safe. Enter incorrect passcode 5 times, & lock will be automatically locked for 5 minute.
Install in about 20 minutes w/screwdriver & drill easily. Compatible w/exterior wooden doors where keyed entry & Fits most standard residential wooden door (fits door thickness of 1.49"-1.88").
It reminds you to replace the battery. When low battery alerts with alarm, & you can check the battery level in the APP. You can temporarily charge by using a 9V battery.
What looks like scratches on keypad is just the protective piece that peels off.