SolarVenti SV20K Basement - Solar Warm Air Dehumidifier All basement systems  have an SControl which can run 2 - 3 exhaust kits at a time(With a 12V power supply)Standard is 1 exhaust kit (Extra can be ordered) The SControl regulation is made based on actual temperature and humidity  1 X SV20K with wall mounting kit1 X 3.4W extraction kit1 X SControl...