The moisture meter can quickly measure the moisture content of the grain. 1. Lightweight and portable: This 18V 600W solar charging panel set has a weight of 415g/15,0oz. Lightweight, easy to carry when traveling outdoors. 2. 3. Stable performance: high conversion efficiency, good output performance, low luminous efficiency, high usefulness. High stability and good durability. 4. Environmentally friendly: This product can be used directly with products with DC fans and can be used directly with products with a water pump. Solar charging, environmentally friendly and practical. 5. Easy to use: Place the solar panel in a position facing the sun. The corresponding interface on the wiring can be connected to products requiring electricity (such as fans, lamps, etc. ). Specification: Item Type: Portable Solar Panel Kit Material: monocrystalline silicon Solar Panel Size: 300 x 145 mm / 11,8 x 5,7 inch Controller Size: 132x68x30mm/5,2x2,7x1,2 inch Gross weight: 415g/15.0 oz Solar Panel Power: 600W Solar Panel Voltage: 18V Controller Voltage: 12 V 24 V Solar Controller Current: 100A List of packages: 1 x Solar Panel 1 x Controller 1 x Clip 4 x Suction Cup 1 x Connecting Line 2 x Instructions