RF4 RF-17N Smart Digital Multimeter, a high-precision, industrial-grade testing tool engineered specifically for electronics maintenance, circuit board diagnostics, and mobile phone repair. Featuring a premium 6000-count True-RMS display, this auto-ranging device delivers highly precise readings even in complex electrical environments with distorted waveforms. With its rugged, ergonomic anti-burn housing and comprehensive measurement suite, it is the ideal diagnostic solution for professional technicians, hardware engineers, and advanced DIYers.