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: 3W5%Solar panel open circuit voltage: 7.5V5%Solar panel standard voltage: 6V5%Solar panel output voltage: 5V5%Solar panel standard current: 500mA5%Solar panel short circuit current: 550mA5%Cell material: high-efficiency monocrystalline siliconCell conversion efficiency: equal 21%Wire length: 4 metersConnector: special connector for ring doorbellUse environment: outdoor sunlightWorking environment temperature: -20-60Working environment humidity: 10-90%Waterproof grade: IP65Colour:WhiteMaterial:ABS+PETPackage Contents:1 * Solar Panel(with extension cable)1 * Bracket1 * Screw Pack1 * English instruction manualOnly 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.