Siemens Room Thermostat Hot & Cold


The RAA21, room thermostat has separate outputs for heating only and cooling only.

If the room temperature falls below the selected setpoint, the heating contact will close.

If the room temperature exceeds the selected setpoint, the cooling will close.

  • 2-Position COntrol
  • Volt-Free SPDT Contacts
  • 6(2)A Contacts
  • 2-30C Range
  • Dimensions: 97x96x35.3mm