For ring doorbell. Multi-angle adjustment - Unlimited rotation, Universal bracket rotates at multiple angles to absorb light energy at better angles. Light-to-electricity conversion - Where there is light, there is electricity Charge in the sun and even on cloudy days, High-efficiency solar panels high photoelectric conversion efficiency. Professional - outdoor Waterproof and thunderproof, No fear of wind and sun, Meet outdoor use need. Widely used in outdoor scenes - No network, no power supply, real-time monitoring, Used in all environments where it is inconvenient to connect to the power grid. Solar panel output power: 3W±5% Solar panel open circuit voltage: 7.5V±5% Solar panel standard voltage: 6V±5% Solar panel output voltage: 5V±5% Solar panel standard current: 500mA±5% Solar panel short circuit current: 550mA±5% Cell material: high-efficiency monocrystalline silicon Cell conversion efficiency: equal 21% Wire length: 4 meters Connector: special connector for ring doorbell Use environment: outdoor sunlight Working environment temperature: -20℃-60℃ Working environment humidity: 10-90% Waterproof grade: IP65 Colour:White Material:ABS+PET Package Contents: 1 * Solar Panel(with extension cable) 1 * Bracket 1 * Screw Pack 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.