Siemens RAA11 ThermostatSiemens RAA11 Room Tamperproof Thermostat for heating only or cooling only. Two position control Switching voltage AC 24250 V, 6A 10 30C Concealed Setpoint The RAA11 room thermostat is used in heating only or cooling only systems to maintain the selected room temperature where a tamperproof housing is needed. Typical use: Schools Public buildings Storage rooms Maintenance rooms Functions The RAA11 room thermostat has separate outputs for heating only