Amprobe AMP-310 TRMS Clamp Meter for HVAC 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-310 TRMS Clamp Meter for HVAC 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-310 is the ability to take three-phase motor measurements, including rotation and inrush. Meter also includes a backlit screen NCV detection and provides measurements for temperature, frequency, resistance, capacitance and performs Diode Test.