True RMS DMM with temperature, capacitance, duty cycle, and low-pass filter. 4,000 count display True RMS for more accurate measurements Auto/manual ranging Temperature measurement Duty cycle to measure the amount of time the motor is on Low pass filter for noisy environments Separate fuse (2) and battery compartment IR serial interface cULus 61010-1 CAT II – 1000V, CAT III – 600V