Car circuit tester for vehicle electrical system diagnosis 0-80V1、The CT100 automotive electrical system activator is designed for diagnosing automotive power circuits ranging from 0V to 80V, making it versatile and suitable for a wide range of vehicles. 2、With its compact design and powerful functions, this product is a necessory tool for automotive technicians and DIY enthusiasts. 3、Equipped with reverse connection and overload protections, the CT100 ensures safer and reliable operation during diagnostic procedures. 4、The tool probe included in the kit allows for conductivity testing, positive and negative level detection, component activation, and more, enabling quick and accurate detection of short circuits and broken wires in vehicle electrical systems. 5、By providing functions such as voltage testing, component activation, continuity testing, ground detection, and short circuit tracking, the CT100 helps users diagnose vehicle issues faster and more effectively, ultimately improving work efficiency. 6、Overall, the CT100 is an efficient testing tool that can greatly enhance the diagnostic capabilities of users, making it a valuable addition to any automotive toolkit. 7、With light, provides illumination in dark areas or at night. 8、Digital display screen, displays measured values for more convenient reading. 9、With LED indicator light, used to display test results.