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BigBee1
1 month ago

On the inside of the door there is probably an “evaluation unit”. The number pad is the input unit. In the evaluation unit on the inside, small DIP switches are true. (1-4 pieces) One of the DIP switches must be adjusted, then enter the new 4 or 5 digit code via the keyboard and confirm it with the key. Then move the DIP switch back to the starting position and test the entered code whether the relay opens the door…

Good luck!

Greeting, BigBee

BigBee1
1 month ago
Reply to  Linaartevida

Very happy 😉