Designed for electronics technicians and field service engineers, its lightweight body ensures effortless portability during on site repairs or workshop maintenance Rapid fault detection, the W01 Inductance Tester instantly identifies malfunctioning components with its LED indicators, ensuring quick diagnosis for inductors Quickly the fault point: The green light is on during detection, indicating that the inductance is working normally, nondamage; The light is not on, indicating that the inductance is working abnormally Featuring universally compatibility with various smartphone models, this portable diagnostic tool eliminates the need for adapters, streamlining workflow for multibrand repair professional for mobile repair stations and time critical troubleshooting, the device combines electromagnetic precise with rapid chip powered response for instantly component analysis, Manufacturer: JDNH