Description: There are many ECU in your car computer system. When you need to change the battery and the computer is powered off, all the settings will be lost and you have to reset to default. You may have to enter a security code to access the stereo. This whole process will waste you a lot of time. Using this simple memory saving device when replacing your car battery will help you avoid these problems. Just plug the OBD2 into your car's diagnostic interface and there will be prompt tones. Plug and play , vary easy to operate. For Germany cars, When you connect the OBD2 and alligator clip, please wait for 20 minutes to uninstall your car battery, otherwise the fuse will be burnt. Specification: Voltage: 12V Interface: OBD2 Material: Plastic Length: Aprpox. 1.3m/4.3ft Package Includes: 1 Piece Car Automotive Memory Saver
