: It requires 4 AA alkaline batteries. Always replace all four at once to avoid leakage.

This digital lock is designed for doors with a thickness of . Dimensions : Front Body : 25.5mm (D) x 68mm (W) x 170mm (H). Main Body : 36mm (D) x 85mm (W) x 158mm (H). Material : Constructed from durable fiberglass and iron. Power : Operates on four 1.5V AA Alkaline batteries .

To prevent being accidentally locked out, always perform these programming steps while keeping your door wide open! 1. Registering Your Security PIN Code

The V20 is renowned for its biometric speed. To add a user:

Press the again to finish. Note: To delete lost cards, you must re-register all cards you still have in one session; those not registered will be invalidated. Operating Features

Touch the smart card/badge to the card reader on the outdoor unit. (To register multiple cards, touch them one after the other). Press the button or the [I] button inside to finish. 3. Locking and Unlocking Unlocking from outside : Touch the keypad with your palm →right arrow →right arrow