The Sonoff Zigbee Bridge Ultra serves as a central hub for your smart home, allowing you to connect and manage up to 256 Zigbee sub-devices. Built with a Rockchip RV1109 dual-core 1.5 GHz processor and 1GB of DDR4 memory, this gateway ensures stable performance when coordinating complex automation scenes. It utilizes the Silicon Labs EFR32MG21 multiprotocol SoC to support the Zigbee 3.0 protocol and is compatible with the Matter standard, which simplifies how your devices work together across different platforms. To ensure a reliable connection, you can choose between 2.4GHz Wi-Fi or a wired Ethernet LAN RJ45 connection, reducing the risk of signal drops. In open environments, the device can reach distances of up to 200 meters when using Turbo Mode, making it suitable for larger homes. The white ABS/PC housing is compact and powered via a USB Type-C interface with a 5V/1A input, operating effectively in temperatures ranging from -10 to +40 °C. This bridge integrates seamlessly with the eWeLink app and is compatible with major ecosystems including Apple Home, Google Home, Amazon Alexa, and Samsung SmartThings. By supporting smart security alerts and scene linkage, it allows you to create a responsive environment where sensors and switches trigger actions automatically based on your preferences.