... output pt100 temperature sensor controller1. Product HighlightsThermocouple: T, R, J, B, S, K, E, Wre3-Wre25.RTD: Pt100, Cu50.1 Relay ... stored in memory and will be used by the controller.ii. To EXIT during the auto-tuning process, press and hold ... the surface temperature of theboiler. A surface mounted, Type K thermocouple is chosen. Boiler surface is to be maintained at 225deg F ...