diallock

2. A lock on a suitcase or bag that uses a small numbered dial.

He set his diallock to 000 before the flight.

3. A bicycle lock with a rotating number dial instead of a key.

My old bike has a diallock that is easy to forget the code for.

4. The dial mechanism itself on a locking device.

The diallock on the safe was stiff and hard to turn.

5. A digital or mechanical code entry system on a door.

The office door uses a diallock so no keys are needed.