Features:

* Waterproof: add waterproof cover, waterproof and rust-proof, extend service life

* Increase capacity: lock without jamming, can accommodate multiple keys, bank cards, access cards, etc.

* Hook: add key hook design to facilitate key placement and easy access.

* Password key: 1-12 digit multi-password combination, you can set multiple passwords and change them at will.

* Wide range of applications: suitable for home, hotel, B&B, factory, school and other places.

ate the switch clockwise, and then rotate it back counterclockwise, accompanied by a "click" sound, the password change is completed: