Feature:1. Compatible: The doorbell solar panel is fully compatible with for Video Doorbell 2 (not for 2nd), for Doorbell 3, for Video Doorbell 3+, for Doorbell 4 Plus, for Doorbell 2K Camera.2. Ideal Solution: You don't need to take the doorbell every few days to charge it. If you don't have a wall outlet near the doorbell or don't plan to wire the doorbell, solar panels are the best solution.3. Withstand Extreme Weather: The solar panels are well made and have an IP66 rainproof rating that can withstand extreme weather conditions, rain, snow, thunderstorms, and more. Operating temperature from 5F to 120F.4. 360 Degree Adjustable Stand, 9.8 Feet Charging Cable: The 9.8 feet charging cable allows the solar panel to be installed in a sunny area. The 360 degree adjustable stand allows the doorbell solar charger to be adjusted to a sunny direction.5. Easy to Install: The 10W solar panel is easy to install, you just need to punch holes in the wall, install the solar panel, and then connect the charging cable to the doorbell, it can be fixed on the wall, roof, patio or other suitable locations to ensure stability and safety.Specification:Item Type: Solar Panel Camera ChargerMaterial: ABS, Monocrystalline SiliconPower: 10WWorking Voltage: 5V Open Circuit Voltage: 6VOutput Current: 600mA MaximumCharging Cable Length: Approx. 3 meters/9.8ftCompatible Doorbell: for Doorbell 2K Camera, for Video Doorbell 2, for Doorbell 3, for Video Doorbell 3+, for Doorbell 4 Plus.Package List:1 x Solar Panels 1 x Base 3 x Screw 3 x Expansion TubeNote:Manual measurement please allow some error.The device must be installed and used under full direct sunlight conditions to maximize the charging effect. It cannot be installed in a barrier environment, such as under insulated glass, under automobile glass, etc.