Product information: Material: metal+plastic Silicon wafer type: monocrystalline silicon Style: BSY-300-300 solar fan Features: Cooling: Double-fan solar panel kit can exhaust indoor hot air, effectively reducing indoor temperature. Operation: When the sun shines on the solar panel, connect the interface and the fan can be started. Up to 3000 rpm. When the sunlight is insufficient, the fan will work slowly or even stop working. Easy to use: place the solar panel where it can receive sunlight, install a fan and connect it for use. No wiring, more flexible use, no battery products, greener and safer. Epoxy resin surface lamination, IP65 waterproof, improve durability. Size Information: Solar panel size: 300 * 300*300*2.5mm Packing list: 1* Solar panel 2* Chassis fan 2* Iron mesh 4* Screws 1* General instructions