Check the listing for details. OhmStar -SMART Resistance Substitution Box, Programmable Ohm Source, MADE in USA. Condition: New. Listed at 595.00 USD. ohmSTAR, made by LABMETRIC in the U.S.A. Super High Accuracy Resistance Substitution Box, Programmable Ohm Source FEATURES:Super High Accuracy and PrecisionComputer Programmable through USB connectionProgrammable Resistor Value Quick Keys Table Mode: Dual Display Shows Ohms and any Process Value SimultaneouslyFully Isolated Mechanical Relay SwitchedCurrent Limited Protection APPLICATIONS:Automated Test (ATE) Simple Commands Programmable Resistance SourceUniversal Calibrator: Thermistors, RTD, Pressure, Strain, Conductivity etc. Upgrade Benchtop Thumbwheel and Selector Switch type Devices We offer a 60 day money back period and lifetime warranty against defects. This device is Proudly Designed, Assembled, Packaged and Shipped from the U.S.A. by an American Company Ohm star RTD Promo - YouTube Video will open in a new window [isdntekvideo]