The spiral cables are used in gate construction for bridging the distance to the evaluator electronics. The connecting cable of the switching strip is led to the terminal box on the moving part of the gate. The connecting cable leads from here via a cable spacer (if needed) to another terminal box on the fixed part of the gate. From there, the link to the evaluator electronics is completed with an independently insulated cable, provided by the customer. A guard spiral at the terminal box and at the spacer serves for strain relief and as anti-kinking protection for the spiral cable.