RV Roof Vent Fan, by Fan-Tastic Vent, is a twelve volt camper vent with low amp draw (0.2-1.9 amps) and features variable speeds. Reversible air flow switch (in or out) and Rain Sensor adds to great ease of use. When water contacts the sensor, the dome closes and the fan blades shut off. When the sensor dries, the dome reopens and fan blades restart. Radio Frequency Remote Control allows you to activate the fan and raise the dome. Handy, automatic mode adjusts fan speed and turns on or off to maintain your preferred temperature comfort settings. Dome is strong, durable Polycarbonate, in smoke color.