12V Auto Relay Tester With Battery-Free Operation & Test Button - 4-Pin/5-Pin Heavy-Duty Relay Diagnostic, Wiring-Free Connection Via Battery Clips Fo

[Compatibility]: Supports both 12V car relays, making it versatile for use with a wide range of vehicles.[Diagnostic Precision]: Offers accurate and reliable testing results, helping to identify faulty or underperforming relays with ease.[User-Friendly Interface]: Designed for simplicity, it allows even beginners to easily understand and operate the tool without extensive training.[Portable Design]: Lightweight and compact, this tool is easy to carry, making it ideal for on-the-go diagnostics and quick checks.[Durable Construction]: Built to withstand the rigors of regular use in a workshop environment, ensuring longevity and consistent performance.RedABS