Amprobe AMP-220 TRMS Clamp Meter for Electrical Technicians is a versatile digital clamp meter for today's technician with TRMS measurements and 600V AC/DC and 600 A AC range. Amprobe AMP-220 TRMS Clamp Meter for Electrical Technicians also includes Low-Pass Filter and Amp-Tip techology for precise measurements down to 1/10 of an Amp. Also featured with the Amprobe AMP-220 is a backlit screen NCV detection and measurements for frequency, resistance and capacitance. The unit also performs Diode Test.