The 24 to 250 VAC Siemens RAA21 thermostat is built for use in heating only or cooling only systems. This thermostat is used to maintain a selected room temperature.

Siemens room thermostat with set point adjustment

Designed for public sector use, this Siemens electromechanical room thermostat is suitable for installation in the storage and maintenance rooms of schools or similar public premises. Maintaining a selected room temperature in heat only or cooling only systems, this thermostat is tamperproof, helping to reduce the risk of accidental or malicious temperature changes. This thermostat works to constantly read the room temperature, closing the heating contact if it falls below the selected set point or closing the cooling contact if it rises above it.

Siemens tamperproof room thermostat 8-30c

Designed for heating systems, this Siemens wireless room thermostat incorporates the RDH100RF transmitter and RCR100/433 receiver and is suitable for use in homes, schools or offices. Suitable for use with thermal valves or zone valves, combi boilers, gas or oil burners and pumps, this thermostat offers both two position and PID intelligent learning temperature control, configurable via parameter P01. The two position control algorithm controls on/off based on a chosen setpoint.

Siemens easy electronic room thermostat RF plus receiver with TPI

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Siemens Thermostat