Automotive Circuit & Relay Tester,12V/24V Vehicle Electrical Diagnostic Probe,Voltage Polarity Continuity Short Circuit Detector for Auto Repair

• Versatile vehicle electrical diagnostic probe, compatible with 12V & 24V cars, vans, trucks, buses and engineering machinery. Supports voltage, polarity, continuity, short circuit and leakage detection for auto circuit maintenance. 

• Built-in relay testing function, works with standard 4-pin and 5-pin automotive relays. Quickly identify relay faults including coil burnout, contact sticking and abnormal engagement.

• Digital display screen shows real-time voltage value. Equipped with positive and negative indicator lights: red light for positive detection, green light for negative/ground detection, no light means no voltage detected.

• Equipped with long extension cable and battery alligator clips. Features one-click positive/negative output switch, easy to operate for professional mechanics and repair shops.

• Shock-resistant & moisture-proof construction, stable performance working from -20℃ to +55℃. Portable handheld design, perfect for vehicle circuit inspection and troubleshooting.