Whether you are tall or short, with old or new Towables or Motorized RVs, this patent pending air exchange system makes operation as simple as sitting in your easy chair and pushing a button. The Radio Frequency Handheld Remote has you activating the fan and raising the dome by pressing the mode pad. With the automatic mode, you select your comfort setting and the blades will automatically turn on, off, increase or decrease speed to maintain your temperature choice. Manual mode allows you to select off or one of 14 fan blade speeds. Includes a custom wall cradle made for your convenience. Select an easily accessible location, install the lightweight cradle, and operate fan from cradled remote or remove and operate fan from anywhere inside or outside your coach. Equipped with a reversible airflow switch (In or Out air flow), and Rain Sensor. The built in rain sensor closes the dome and turns off the fan blade when the sensor becomes wet; the dome reopens when the sensor dries. A rain sensor shut off switch and a back up manual dome open/close knob are also provided. Great for any RV with a standard vent opening and installs with the normal 2 wire hook up.