HVAC Kit with TestersHVAC Clamp Meter Cat. No. CL320 with TRMS measurement technology measures AC current, NCVT, AC DC voltage, resistance, frequency, DC microamps, capacitance, duty cycle, diode test, continuity, and temperature Cat. No. IR07 Dual IR Probe and Thermometer measures temperature from 40 to 572 Degrees Fahrenheit ( 40 to 300 Degrees Celsius); accurately measure surface temperature with Infrared Thermometer (DS ratio 8: 1) Measure air vents and duct