Zmart 12V Trailer Tester 7-Pin Adapter Diagnostic Tool Wiring Check Light Test Plug Socket for Cars, Trucks, Caravans, and More - Universal

Features: 100% brand new, high-quality. Durable construction, high and low temperature resistant, acid and alkali resistant. Compact handheld design, portable, and easy to carry. Simply plug the tester into your trailer or caravan's 7/13-pin socket or 7/13-pin plug and press the yellow button on the side of the tester. Designed to indicate wiring faults in towing vehicles and trailers/caravans. Specifications: Power: 9V battery (not included) Voltage: 12V Package Included: 1 x Plug Socket Diagnostic Tool Features: 100% brand new, high-quality. Durable construction, high and low temperature resistant, acid and alkali resistant. Compact handheld design, portable, and easy to carry. Simply plug the tester into your trailer or caravan's 7/13-pin socket or 7/13-pin plug and press the yellow button on the side of the tester. Designed to indicate faults in the wiring of towing vehicles and trailers/caravans etc. Specifications: Power supply: 9V battery (not included) Voltage 12V Package includes: 1 x Plug Socket Diagnostic Tool