This simple mechanical rotate thermostat is used in heating only systems to maintain the selected room temperature. If the room temperature falls below the selected setpoint, the heating system will be opened. If the room temperature exceeds the selected setpoint, the heating system will be closed. Typical use: •  Residential buildings •  Apartments •  Commercial spaces •  Gas boiler or oil buners •  Certificates: CE, ROHS, UKCA, REACH