Description:Our 7 pin trailer tester is made of high-quality ABS and copper material with a matte finish, so it is durable, reliable, and sturdy. It can quickly indicate whether the fault is a car wiring or a trailer wiring, and can effectively test for problems with 7-pin plug and socket connections.Specification:Battery: 9V battery (not included)Voltage: 12VProduct model: VS170E-TProduct material: environmentally friendly nylonProduct size: about 196*55*42mm/7.68*1.97*1.57 inProduct weight: about 170gProduct function: test the signal between the tractor and the towed vehiclePacking List:1*testerNotes:1. Due to the different display and lighting effects, the actual color of the product may be slightly different from the color shown in the picture.2. Due to manual measurement, please allow a measurement deviation of 1-3cm.