SIEMENS RAB21 Room thermostat for 2-pipe. fan-coil, 3-st. ventilator

SIEMENS RAB21 Room thermostat for 2-pipe. fan-coil, 3-st. ventilator
RAB21 room thermostat for 2-pipe fan-coil unit with 3-speed fan, external (automatic) heating / cooling switching Room thermostats for heating or cooling, automatic heating / cooling switching function (with external attachment thermostat) 2-point regulation. Manual 3-step fan speed switching. Switching voltage AC 250V. Output signal ON/OFF

Application:
RAB21.. thermostats are used for room temperature regulation in heating or cooling systems.
Typical uses: Commercial buildings, residential buildings, light industrial operations
The thermostat can be used to control the following devices: Zone valves, valves with thermoelectric drives, fans