OHMIGO-USB is a ready to use field product with a standard USB cable included for use with a PLC, PC etcetera. It enables control of any external device with a resistance signal as an input. Any type of standard temperature sensor like Pt100, Pt1000, Ni1000, NTC, PTC etcetera can be simulated. A set of ASCII AT commands on the serial interface or a voltage 0-10V on the Analog input sets the output resistance with superior precision from 68 ohm up to 9 Mohm and a temperature accuracy better than 0.1 ° C.