Item Type: Trailer Socket Tester <br>Material: ABS, copper. <br>Battery Specification: 9V battery, not included. <br>Applicable Range: Suitable for the test of N type 7 pin trailer plug socket connector. Trailers and RV can also be used.<br>1、Smart Socket Tester: This socket tester can test every pin socket functions of the car, and the whole operation is very simple. <br>2、Clear in Indication: There are clear lights and label on the test tool, this tester indicates quickly if a failure concerns the wiring. <br>3、Wider Compatibility: One side can connect the 7 pins plug of a trailer and another side can connect the 7 pins socket of a car for test. <br>4、Good ABS and Copper: Mainly made from premium ABS and copper material, not likely to malfunction and has good durability for long term use. <br>5、Convenient Carrying: Comes with a compact size and a light weight as well, the trailer socket tester is very convenient to carry with you.The tester is not compatible with the LED light unit on the trailer.1 x <br> <br>Trailer Socket Tester