LAUNCH RelayCheck Pro Auto Relais tester 12V/24V Professional portable relay with automatic pin detection, error indication by flashing code and quick test.

【Automatic Pin Detection for 4 and 5 Pin Relays】Automatically detect pin configuration, accurately check the coils and switching contacts of relays, eliminating incorrect connections, ideal for fast and safe diagnostics in workshops and industries. 【Compatible with 12V/24V Systems for Universal Compatibility】Suitable for vehicles, motorcycles, trucks, boats and industrial installations; reliably test standard relays of different voltages without manually changing settings. 【Fast Fault Diagnostics with LED Display & Flicker Code】Displays instant results using green and red LEDs as well as flashing codes for clear "Good/Bad" assessment and accurate fault search in seconds. 【Sturdy and heat-resistant ABS housing with professional insulation】Offers reliable protection against overheating and electrical interference, is durable and ideal for heavy workshop use. 【Compact & Portable Design with Direct Vehicle Battery Power】No power supply or external batteries required; Compact design with alligator clips allows mobile testing anywhere and anytime.