This distributor supplies power to various types of 2-wired transmitters and outputs 4 to 20mADC by isolating the output current signal of 4 to 20mA from a transmitter or 1 to 5 VDC by converting it directly. In addition, by the overcurrent limiting function built-in, this unit can operate properly when any short-circuit is happened at the transmitter side. In this distributor, two types, an input/output isolated type or an input/output non-isolated type, are available.