With the BlueBuilt Radiator Fan Mono Set, you can distribute the heat from your radiator across the room faster. This 3 built-in fans in this radiator fan evenly push the air through the room. You can easily mount the radiator fan with the magnets under your radiator or in your convector pit. With the included temperature sensor and thermostat cable, the mono set automatically turns on when the radiator is warmed up. That way, you can save on gas and energy to heat up your room. The radiator fan has a maximum 28dB noise level, so it doesn't make a lot of noise and you can use it in the bedroom. Do you have a long radiator in the room? You can expand this set with up to 10 radiator fans.