The NI 16R is a True RMS current clamp, especially designed for demanding users. The clamp meter is suitable for measuring AC / DC currents (up to 1000 A), AC / DC voltages, resistance and frequency. This sturdy current clamp is approved to measure in CAT IV environment. Extra functions of the NI 16R are continuity test and auto power off. Backlight makes it possible to work in poorly lighted situations.