This dehydrator is great for dehydrating fruit rollups, banana chips, apple chips, jerky, and other healthy snacks. It comes with four (13 1/2″ diameter) trays, no tray rotation needed. Adjustable temperature control: 95°F-160°F (35°C-71°C) Operating Instructions: 1. Place base on flat, dry and stable surface. Ensure it is 6" away from walls or other electronic devices. 2. Prepare foods and load to trays. Keep items from centre air hole and allow space between the items for best results. 3. Stack loaded trays onto base, keeping edges of trays properly aligned. Place powerhead on top tray. Note: Always use a minimum of 4 trays when operating. 4. With dry hands, plug power cord into 120V, 15A, 60Hz electrical outlet. 5. Set desired drying temperature using temperature control knob. Cleaning Instructions: 1. The trays are easy to clean, simply soak in warm water with a mild detergent for several minutes (a soft-bristle brush can loosen stubborn food particles). 2. Do not clean any parts with a dish washer, scouring pads, abrasive cleaners or sharp utensils, as they can damage the surface.