- Voltage and Polarity Testing : The Jdiag P100 allows for quick identification of both DC and AC voltage, as well as positive or negative polarity. This feature aids in swiftly diagnosing electrical problems, making your work more efficient. - Resistance and Continuity Testing : Equipped with an LCD screen, this probe tester displays resistance values, simplifying the assessment of electrical component continuity. Accurate readings facilitate precise troubleshooting, ensuring you identify issues effectively. - AC Circuit Signal Testing : The P100 is designed for efficient troubleshooting of sensor circuit issues. Quickly pinpoint problems to save time and enhance your workflow. - Component Activation : Effortlessly activate components, whether they are handheld, within a vehicle, or with grounding. This capability supports seamless testing and evaluation of various electrical parts, increasing your diagnostic versatility. - Trailer Light and Connection Testing : The 10-meter extension cable enables comprehensive testing of trailer lights and connections for both cars and trucks, ensuring safety and functionality in towing scenarios. Use Scenarios : 1. Diagnose and repair vehicle electrical systems, ensuring reliable performance. 2. Test and troubleshoot trailer lighting connections before trips to avoid legal and safety issues. 3. Verify sensor connections in automotive applications for optimal vehicle functionality. This product is essential for automotive technicians seeking a reliable and efficient tool for electrical diagnostics and component testing. Its user-friendly design and functionality make it a valuable addition to any professional toolkit.