Metal Line Auxiliary Lock Digital Lock Junior for Partitions and Back Doors, Silver OS-003

This is a security auxiliary lock compatible with any type of door, whether aluminum, wood, or steel.

It unlocks simply by entering a PIN code.

The PIN code can be set to any number from 4 to 6 digits.

It will not malfunction due to power outages or battery failure.

Type: For interior doors/back doors / Surface-mounted type Convenient push-button lock High security Freely changeable PIN code Highly durable mechanical structure