Advanced Solar Technology: Powered by solar energy, this wireless intercom doorbell ensures uninterrupted operation without the need for frequent battery replacements.Long-Distance Communication: Designed to facilitate clear and reliable communication over long distances, perfect for large homes or buildings.Wall-Penetrating Capability: This doorbell system can effectively communicate through walls, ensuring that you never miss a visitor, regardless of your location within the premises.Non-Visual Intercom: Enhances security by allowing voice communication without the need to reveal your visual identity.Easy Installation: No complex wiring required, making the setup process quick and hassle-free.Colour:WhiteMaterial:plasticPackage Contents:1 set x Solar Wireless Intercom DoorbellOnly 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.