Desigo RXC terminal unit controllers from Siemens Ðǿմ«Ã½ Technologies are claimed to far exceed the European Ðǿմ«Ã½ Automation and Controls Association certification requirements to maintain their simulated control temperature to within +/- 1.4ºC under varying load conditions in both heating and cooling cycles.

They achieve a control accuracy of 0.2ºC for heating and 0.1ºC for cooling.

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