Required for the use of the SW-01 mediometer on cars without an odometer cable. If mounted on the non-drive wheels of the car, it drastically reduces the problem of possible wheel rolling due to the slippery road surface. Technical data DETECTION DISTANCE 2 - 5 mm REFERENCE DIMENSIONS Minimum 18 x 18 mm. - Any type of metal. SUPPLY 10 - 30 Vcc / 20 mA EXIT Close contact (NPN type, open collector) max. 20 V - 200 mA. ENVIRONMENTAL LIMITS Temperature: from -20 ° C to + 70 ° C Degree of protection: IP67 TYPE OF CONNECTION 3 x 0.14 PVC cable of 2 meters. DIMENSIONS Cylinder M 18 x 1 with length 50 mm.