Power your fan after dark: Addition of the Solar Controller with Dual Mode Technology will enable your Solar Powered Attic Fan to run after sunset, or when there is no light available from the sun. When there is no sunlight available to power the fan, and the Solar Controller has the optional house power connection enabled, the Solar Controller will cycle house electricity for 8 minutes every half-hour in order to power the fan. This will allow your attic temperature to continue to drop after sunset and help remove the hot, stagnant air that can buildup on those warm summer evenings.

A perfect replacement for electric fans: The Solar Controller allows you to power your fan with free abundant solar power when you need it most while also giving you the option to run your fan after sunset using only a small amount of house electricity. All without the noise and operating expense of an outdated traditional electric attic fan.

Real-time status updates: The remote control readout on the Solar Controller sends a radio signal through your walls and ceiling to give you a real-time status update on fan operation to let you know at any time if your fan is running and if the power source is from the solar panel or the house electricity.

No more questioning if your fan is running! This patent pending, industry-first advancement will give you the peace-of-mind that your fan is functioning and your attic is being ventilated.

Attic Temperature and humidity display: The remote control unit will also display the current attic temperature and relative humidity. Simply press the STATUS button and the information is transmitted from the Solar Controller to your hand held remote.

An intelligent device: The Solar Controller monitors both temperature and humidity optimizing your fans operation for maximum performance in all weather conditions. The Solar Controller intelligently limits the amount of electricity used to power the fan, so it is a perfect alternative to traditional electric powered vents. With the built-in temperature and humidity sensors, the Solar Controller can monitor attic conditions and utilize solar power or house electricity to optimize the run-time of the fan by either removing the excessive heat or moisture.

Won't this add significant cost to my electric bill?: No! The Solar Controller is uniquely optimized to run the least amount of time possible using the least amount of electricity possible. Since the ambient temperature is continually dropping after sunset, the fan only needs to run in short intervals, and, since it uses a DC powered motor, the amount of actual energy drain is minimal. The additional electricity required will cost less than $5 per year.

Temperature Sensor: Monitors the attic temperature and will turn on the fan when the temperature reaches 80 degrees and will turn off the fan when the temperature dips below 77 degrees. This allows the fan to only run when it is necessary to vent hot air from the attic space, extending the life of the motor. The unit comes with the temperature sensor engaged. If year-round venting is desired, you can simply disable the sensor on the back of the remote.

Humidistat: Too much humidity in the attic can cause condensation on the surfaces which can lead to the growth of mold and mildew. The built-in humidistat monitors the attic humidity and will turn on the fan if the attic air reaches 75% relative humidity and will turn it off at 65% relative humidity.

It costs less than $5 annually to run the Solar Controller