The digital clamp meter UNI-T UT231 is a power meter measuring not only AC voltage and current but also active, apparent and reactive power. The UNI-T UT231 clamp meter measures temperature, frequency, active energy and can be connected to PC. Digital Clamp Meter UNI-T UT231 Features?Measuring functions:?AC voltage?AC current?Active and apparent power?Reactive power?Power factor?Phase angle?Active energy?Frequency?Temperature?Auto ranging?True RMS?Maximum and minimum data hold?Single-phase 2-wire measurements?Calibration function?Data hold function?Sleep mode?Low battery display?Display backlight?USB connection?55 mm maximum jaw diameter?Measurement update speed 3 times/second?Compact and comfortable design?Compliance with safety requirements IEC 61010 CAT III 600 V, CAT IV 300 V