An alarm unit can detect if merchandise vibrate or move, use 3-digit code, code can be modified freely, built-in rechargeable battery.

Main parameter:

Size: diameter 65 x 13mm.

Keyboard: 3-digit number button and one function control button.

Alarm volume: ≥100DB±5%..

Charging input port: 1 MINI USB socket.

Maximum standby time: 7 days.

Status indication: LED light.