XA5 RELIFE Motherboard Coil Tester Inductor Detector Tool for PC Repair Electromagnetic Induction Quick Fault Check. This device is designed for testing the quality of inductors on electronic motherboards. It utilizes electromagnetic induction technology for precise measurements and rapid fault point locking. The tester is plug-and-play with a Type-C interface and indicates normal inductor operation with a green light. It is suitable for electronics maintenance, circuit diagnostics, and industrial or educational use.