- Versatile Diagnostic Tool : The EM285 automotive circuit tester is engineered for comprehensive diagnostic applications. It effectively checks the continuity of switches, relays, diodes, fuses, and circuits. It also assesses poor grounds, cable and plug polarity, and continuity, while swiftly identifying short circuits. - Visual Feedback : The built-in red and green LED indicators offer immediate and clear visual feedback, allowing for quick assessments during testing. - Precise Polarity Testing : This tester ensures accurate polarity checks for cables and plugs, safeguarding against incorrect wiring that could lead to vehicle electrical malfunctions. - Overload Protection : Featuring 8A overload protection, the EM285 prevents damage caused by excessive current, ensuring safety and reliability during all testing operations. Application Scenarios : - Use the EM285 to verify the integrity of fuses in your vehicle, ensuring that electrical systems function properly. - Utilize it to trace and resolve issues with faulty wiring, ensuring that you're able to locate and fix shorts quickly. - Test the polarity of battery connections when replacing or installing new components to avoid damaging electronic systems. This comprehensive tester is not just reliable; it’s an essential tool for automotive professionals and DIY enthusiasts looking to maintain their vehicles’ electrical systems effectively.