- Multifunctional Testing Capabilities: The P50 Automotive Circuit Tester is an indispensable tool for automotive diagnostics. It efficiently checks for blown fuses, evaluates battery performance, and detects a variety of circuit faults. - Automatic Polarity Identification: Utilize LED light prompts for easy identification of positive and negative poles. The red light indicates positive, while the green light indicates negative, simplifying your testing process. - Real-Time Voltage Display: Equipped with a built-in LED display, this tester provides clear real-time voltage readings. The probe pen features a rear light function, ensuring visibility even in dimly lit conditions. - Three Modes Switching: Tailor your testing experience with three operational modes. Switching between modes is seamless with a simple button press on the test pen body, enhancing versatility for different testing needs. Use Scenarios: 1. Quickly diagnose electrical issues in cars by checking fuses and circuit connections, saving time on troubleshooting. 2. Assess battery health at home or during roadside emergencies to ensure reliable vehicle performance. 3. Conduct routine inspections of wiring systems to prevent future faults, ensuring optimal safety and functionality. This automotive circuit tester combines essential features with user-friendly operation, making it a must-have for both professionals and DIY enthusiasts. Its compact size and durable construction ensure it can handle various automotive environments effectively.