The DM5010 Programmable Digital Multimeter measures DC Volts, Resistance, True RMS (AC or AC+DC) Voltage, and even AC/DC Current (w/ext. shunt resistor and a scaling factor). 4 1/2-digit readout, autoranging, diode test, & math functions such as dB calculations, averaging, offset, scaling, and Hi/Lo/Pass. It is used in the TM5000 frames.