Dometic Fan-Tastic Vent RV Roof Vent, Model 7350 HIGH PERFORMANCE ROTARY FAN - The core of this truly fantastic ventilation solution is a high performance rotary fan which is firmly integrated in the roof window, and can be adjusted as required. Simply set the desired temperature on the remote control and the fan motor will start and stop automatically as the interior temperature of the vehicle exceeds or drops below the selected temperature level. RAIN SENSOR - This vent features a rain sensor that automatically closes the dome when wet and reopens once the sensor dries. The built-in manual knob allows for closing the dome in an emergency. VARIABLE SPEED - The powerful yet compact Dometic Fantastic Vent has fixed, manual speeds or automatic variable speeds to get the airflow precisely as you want. Its simple reverse switch changes the fan direction, drawing air in or out of the vehicle. ACHIEVE THE IDEAL ON-BOARD TEMPERATURE  For true comfort at your convenience, the Fantastic Vent has a built-in thermostat to take care of maintaining your desired temperature. ADDITIONAL FEATURES - Two-wire 12V DC hook up, remote control with wall cradle, white high profile base, smoke dome, and fits standard 14" x 14" openings.