Features: The fan solar panel kit can exhaust indoor hot air and effectively reduce indoor temperature. Operation: When sun shine at the solar panel, connect the interfaces and the fan can start. The maximums speed can reach up to 3000rpm. When the sunlight is insufficient, the fan will work slowly or even stop working. Easy to use: Place the solar panel in a place that can receive sunlight, install a fan, and connect it for use. None Wiring usage is flexible. Epoxy resins surfaces lamination, waterproof, improves durability. The solar panel fan kits can be used in homes, greenhouses, utility room, pet houses. Specifications: Materials: Polysilicon Style: Single Exhaust Fan/Double Exhaust Fan Maximums power: 10W Open circuits voltages: 18V Maximums power voltages: 12v Short circuits current: 1Amp Maximums power current: 0.6Amp Solar panel size: about 33.5x20x2.50cm/13.19x7.87x0.98inch Package Includes: 1set Solar Panel Fan Kits note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.