Product Overview

A small 3‑digit mechanical combination lock customized by a Chinese factory, designed specifically for storage scenarios on university campuses. Purely mechanical – no batteries required. Unlock by entering the 3‑digit code on the rotating dial. Solves the problems of key loss or messy key management.

Key Features

• 3‑digit code unlocking : Offers 1,000 combinations (000–999), meeting basic security needs for daily access.

• Purely mechanical structure : No batteries or power source needed. Unaffected by power levels, low failure rate, and stable for long‑term use.

• Compact design : Small footprint, does not take up too much door space, suitable for standard locker mounting holes.

Applicable Scenarios

• University library storage lockers

• Sports equipment lockers, student changing lockers

• Study room temporary lockers, lab personal item lockers

• Any campus storage area requiring low cost, maintenance‑free operation, and centralized management

Advantages

• Keyless convenience : Students or users do not need to carry a key – just remember the code to unlock.

• Maintenance‑free : No battery changes, no wiring – ready for long‑term use after installation.

• Economical and durable : Suitable for bulk university purchases, meeting high‑volume, high‑frequency usage needs.

• Easy installation : Embedded installation, compatible with common steel or wooden cabinet doors.