Patented product.

This design combines both recoiler & sensor function; small sized; there is a 3V lithium battery built inside the sensor; alarm can be triggered if sensor’s switch is loosened; sensor detects cable’s status at the same time; sensor will give alarm if cable is cut / short circuit; special switch to turn on / off power; turn on / off alarm by a remote key.

Product size: 57x35x24mm
Box color: white / black
Cable diameter: 1.2mm.
Cable length: 75cm
Battery inside the sensor: CR1632, non replaceable.
Max standby time: 2 years.
Alarm volume: ≥90db