Magnetic device which is joined by a spiral allows detection of metallic masses in the transit zone. After identifying the mass, such as a car or motorcycle, the detector sends the signal to the control unit.

■ LOOP 230/1: 1 channel magnetic spiral detector.

■ LOOP 230/2: two channel magnetic spiral detector.

This version allows the connection of two spires, thus making it possible to control two different and close automations (e.g. two opposite barriers for entry and exit of vehicles) to operate two controls in the same automation (e.g. opening before the passage of a vehicle and closing after transit).