Trailer Tester 7/13 Pin Trailer Caravan Socket Tester 12V Tester Car

the tester enables a quick check of the 12V electrical system on trailers and towing vehicles such as cars, mobile homes, etc. Suitable for 7 and 13 pin plug connections. incl. adapter 7- to 13-pin and 13- to 7-pin suitable battery: 9V block (not included) Corresponds to DIN ISO 1724