Theft Stopper Cabinet Alarm

The STI® Mini Theft Stopper Cabinet Alarm offers a cost‑effective way to deter tampering or theft of fire extinguishers and other critical equipment, including fire hoses, sprinkler shutoff valves, and medicine cabinets. Despite its compact size, it delivers strong, reliable protection without obstructing access or interfering with emergency use.

When installed as a cabinet alarm (model STI6254), the main unit is positioned inside or beside the cabinet door. A reed switch is fixed to the door frame, while the paired magnet is mounted on the door itself. Opening the protected door breaks the magnetic contact and triggers a 105 dB alarm, alerting others immediately.