12V 汽车用品 Relay Tester, Car Battery & Alternator Test Kit , Relay Switch & Circuit Inspector , Tests 4 & 5 Pin Relays , Battery Tester , Alternator Tester , Sound Troubleshooting , Patented

TESTS 4 & 5 PIN RELAYS: Quickly spot bad relays before they cause issues. This tool helps you confirm if your relays are firing correctly, removing the guesswork when diagnosing electrical issues. USA Patented #9,423,462BATTERY & ALTERNATOR CHECKER: Connect directly to the vehicle battery with the included clamps to verify whether the battery is charged and the alternator is producing the correct output.DURABLE, COMPACT, AND READY TO USE: Our tools are built tough for any situation. Garages, workshops, and roadside toolkits, this tester is lightweight, portable, and engineered to last for years of reliable service.SIMPLE PUSH-BUTTON OPERATION: Just plug in the relay, hit the TEST button, and watch the lights tell you everything you need to know. No complicated setup, no advanced mechanic skills required.BATTERY & ALTERNATOR HEALTH CHECK: Hook up to your car battery with the heavy-duty clamps to see if your battery’s holding a charge and your alternator is producing the correct output.