Review on 🔌 Auto Car Diagnostic Relay Tester Kit - 12V Electronic Automotive Battery Checker Tool for Automotive Relays by Eddie Gordon

I work on trailers and this is a handy tool. They're full of relays. It was spot on. I've had relays that clicked but still went bad and this thing caught them testing. Much cheaper than a tool trolley and looks pretty much the same. Much easier and faster than bench testing with jumpers and a voltmeter. If the coil in the relay is broken, it will immediately show an error, if the contacts are bad, it will go through about 10 click cycles and then fail. When it's good, it goes through about 10 click cycles and the indicator turns green. The relay works properly or fails after a test click. Impressed! This is constantly being passed around the shop by other mechanics who are borrowing it.