True power monitoring suitable for 1- and 3-phase supplies for frequency-controlled motors, 9 measuring ranges 0 – 1000 Hz, measuringvoltage 0 – 550 V AC/DC, 1 C/O output, 1 analogue output 0 – 10 V DC or 4 – 20 mA. Width 225 mm, UB = 24 V DC.