The Eufy Security S220 Bundle includes a wireless video doorbell extension and an additional wireless chime unit, designed to expand your home security system. This extension doorbell requires a connection to an existing HomeBase 2 or 3 unit for proper operation and provides extended coverage for your property. The included wireless chime allows you to hear doorbell notifications from multiple locations in your home, such as garages or different floors, ensuring you never miss a visitor. The system features 2K video resolution for clear picture quality and operates on battery power for flexible installation. The wireless chime offers eight different ringtones to choose from, allowing customization to your preferences. The volume control includes three adjustable levels for various environmental needs. Both components are made from durable black plastic materials, maintaining consistency with the Eufy security product line. This bundle provides practical expansion options for existing Eufy Security Video Doorbell 2K systems and enables comprehensive coverage without complex wiring requirements. The extension doorbell retains the same functionality as the main unit, while the additional chime ensures that audible notifications reach all necessary areas of your home. Installation is straightforward for users already familiar with the Eufy ecosystem and requires minimal additional effort beyond the initial system configuration.