Product details:

TPI 270 400A Digital AC Clamp-on MultiMeter features a 10" measure motor to measure in-rush current and run current, it measures temperature differential with relative mode, non-contact voltage feature to immediately see if power is being supplied to the 24VAC control circuit of thermostats. TPI 270 400A Digital AC Clamp-on MultiMeter also measures frequency, has min/max/record option, hold, peak holdup to 40,000 microfarads to run and start capacitors, 4,000 count display with 41 segment analog bargraph, auto/manual ranging, low battery indication, over rang indictor (OL), High voltage indication (30V AC/DC), Auto shutoff after 30 minutes, separate compartment for fuse/battery, low Ohm range (400V), Amps AC resolution, 0.01A, VDC/VAC resolution, 0.1 mV, DCuA measurement (0.01uA resolution, and measures temperature with 0.1 degrees resolution.