Adjustable Thermostat allows you to dry different foods at proper temperatures to produce the best drying results. Features a top mounted fan and 500 watts of drying power generate maximum speed and quality for dehydrating fruits, vegetables, and jerky. Helps dry food in hours, not days like other food dehydrators. Comes with 4 trays. Opaque exterior helps block harmful light which destroys the nutritional content of the food being dehydrated. Patented drying system forces air down the exterior pressurized chamber (not through the trays). The hot air is forced horizontally across each individual tray, converging on the core for fast, even and nutritious drying. No flavor mixing and no need to rotate trays.