This document describes the features and characteristics of the RCU20 room temperature controller released by Siemens Building Technologies in 2003. The controller is equipped with an LCD display and can be used for temperature control in heating or cooling systems. It features PI control, three outputs, and automatic cooling/heating switching. It is designed for temperature control in individual ventilation or air conditioning rooms and can control three-way valve actuators and three-way air valve actuators.
