The SET-U4MS3-14/0-500 V from Sensor Electronic Technology is a Three-Phase AC Voltage Transducer that is ideal for industrial and commercial applications. It requires an input voltage of 0 - 500 V and an AC/DC supply voltage (auxiliary) of 5 - 220 V.  This voltage transducer includes RS485 serial interface output ports and a red/green LED operation indicator for the status report. It offers 2 times full-scale overload capacity, true RMS values, optional communication speeds, stop bit, switchable parity (odd/even/none), and power-off memory functionalities. This UL 94-V0 flame-retardant certified voltage transducer has high accuracy and provides electrical isolation between the input and output terminals. It is available in a DIN rail-mount package that measures 83 x 76 x 36 mm.