Article number: 8721008756318 View all Heatfan products > View more: Central heating boilers > How does the Heatfan Touch Sensor work? Heatfan's latest sensor features advanced technology that automatically switches the fans off when the radiator reaches 25.3°C. The red LED on the sensor indicates whether the fans are active. Radiators heat up gradually and cool down slowly. Constantly running the fans at a single speed doesn't account for this dynamic and often leads to unnecessary noise, cold drafts, and a fluctuating indoor climate. Modulating fan speed offers a smart solution. All Heatfans are equipped with technology that automatically adjusts the fan speed to the radiator's temperature. The touch sensor ensures that the fans increase their speed as the radiator heats up, slow down, and finally switch off as the temperature decreases. This ensures even distribution of warm air. The touch sensor has different settings to set the desired speed: 1. Green Low speed Supply temperature > 60°C 2. Yellow Low/medium speed Supply temperature 50- 60°C 3. Orange Medium/high speed Supply temperature 40 - 50°C 4. Red High speed Supply temperature <40°C 5. Blue Maximum speed For cooling in summer 6. Off The Heatfan is switched off Product specifications Item description Item number 8721008756318 Color White Product type Accessories Country of origin Netherlands