Application. Specifications. The trailer tester socket is widely suitable for caravans, RVs, motorhomes, vehicles, trailers, etc. 20*5*4cm; Battery type: 9V (not included, you need to purchase separately) Battery type: 9V (not included, you need to purchase separately) Package size: 20*5.5*4.5cm/7.9 *2.2*1.8in Package weight: 194g / 6.8oz

High performance The car trailer wiring tester is made of high-quality ABS and copper, frosted surface, durable and reliable, ensuring strength and maximum durability for long-term use. Such a practical trailer test tool that you will need. Packing list: K4216; 1 * 7-pin trailer test tool; 1 * English guide

Reliable quality The 7-pin trailer tester with safe and reliable performance, reasonable design. Skillful appearance, convenient operation. Reliable quality and delicate workmanship convince you to take this to replace the old one. Specifications: Main material: ABS and copper Color: Black Item type: Diagnostic tool Item name: Trailer tester Size: Approx. 20 * 5 * 4cm

Test function. This trailer hitch socket has one side to connect the 7-pin plug of a trailer and another side to connect the 7-pin socket of a car. This tester quickly indicates if a fault exists in the car's wiring or the trailer's wiring, and effectively tests the problem with the 7-pin plug and socket connection.