Photoelectricity conversion: light is electricity. It can be in the sun or on cloudy days. High-efficiency PET solar panels solve the problem of power supply. odors in pet houses. Solar exhaust fans solve odors in pet houses. Provide for pets. No wiring required, plug and play. 0 electricity bill, no need to draw electricity, environmentally friendly. IP65 waterproof protection. Solar panel output power: 15W±5% Solar panel open circuit voltage: 14.5V±5% Solar panel standard voltage: 12V±5% Solar panel standard current: 1250mA±5% Solar panel short circuit current: 1375mA±5% Cell material: high-efficiency monocrystalline silicon Cell conversion efficiency: equal 21% Fan power: 3Wx2 Fan speed: 2700/rev Wire length: 3 meters Connector: 5521DC head Use environment: exhaust in pet houses and other places Working environment temperature: -20℃-60℃ Working environment humidity: 10-90% Waterproof grade: IP65 Colour:Black Material:ABS+PET Fan size:120x120x25mm Package Contents: 1 * Solar Panel(with Extension Cable) 2 * Exhaust Fans 1 Set * Installation Accessories (Connecting Piece + Screw + Tie) 1 * English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.