The PIE 510B-Pt-1000-6 Single Type RTD Simulator for Pt 1000 Ohm (Hy-Cal HVAC) simulates an RTD resistance into all types of process instruments including transmitters, recorders, controllers, alarms, data acquisition, and computer systems. No longer will you need to need to lug a decade box around or make errors reading RTD tables incorrectly. The PIE 510B is a superior replacement for decade boxes while eliminating errors caused by misreading RTD to resistance tables by allowing you to dial directly in temperature. The PIE 510B has better accuracy than many higher priced RTD calibrators.