Cable with 1 mm² wisted pair.PVC insulating sheath, diameter 7 mm, colour: RAL 1021 yellow. Twist pitch 10 twists/m. Tinned copper wires, colours: RAL 9001 white and RAL 5015 blue. Nominal impedance 100 ohm (f=1 MHz), capacitance 50 pF (at 20°C).Minimum cable curvature 80 mm. Fully compliant with CEI 46-6 (latest amendment).Supplied in 500 m coils.