Polyvision PVD-07M-HDW v.8.1

1. This smart door lock can be unlocked by password or key. It supports setting 100 kinds of passwords and has functions such as one-time passwords and automatic locking. After 10 input errors, the un more→it will shut down for 3mins.2. The backlit keypad is easy to use in the dark. When the battery is low, it will remind you with a flashing red light.3. Automatically locked within 10-99 seconds after closing the door. Press any key and hold for 2 seconds to lock.