How to use a chain lock

Take the key to open the door, reach in, open the iron bolt, and screw out the small button from the lock inside.

There are many ways to lock the chain door. First, you need to go to the lock store to buy a lock that matches your chain door. It is better to buy a lock with better quality, longer service life and safer. Then go home and lock, buckle and lock the chain door.

The anti-theft chain can be stuck in the slot, and there is double insurance in the hotel door. The anti-theft chain cannot be opened from the outside after being locked, and one side of the anti-theft chain is movable and the other side is fixed.

If you put the chain head in the buckle and walk along the groove, it can play the role of double insurance. If you tear it off from the outside by hand, the anti-theft chain will not come off.