With the testing device 70241-2, you can comprehensively, quickly, and reliably check the trailer socket on vehicles with 7 or 13 pins. Whether it's simulating a turn signal fault or checking LED compatibility, the testing device 70241-2 makes it easy for you to thoroughly check all functions on 13- and 7-pin sockets. A high-quality membrane keyboard with a clear pressure point housed in an extremely robust casing performs well even under the toughest workshop conditions. Thanks to the extra-long cable, you can conveniently start the test from the driver's seat. All of this is housed in an extremely durable casing that is resistant to oil, fuel, and other substances.