DC current measurement (CMP-401 only) and AC current.
AC/DC voltage measurement up to 600 V.
Resistance measurement and continuity test:

continuity test with acoustic signalling (beeper) for resistance below 50.

Temperature measurement (Fahrenheit and Celsius units).
Frequency measurement.
Diode test.
Additionally:

safe, insulated measuring clamps,
double molded housing,
autoranging/manual range selection,
DATA HOLD function, for holding measured values,
backlit LCD,
REL function,
over range indication,
AUTO-OFF function.