SONOFF Zigbee Bridge Ultra Smart Hub














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SONOFF Zigbee Bridge Ultra (ZBBridge-U) โ Zigbee 3.0 Smart Home Hub and Matter Bridge
The hub at the centre of a Zigbee smart home: it runs up to 256 SONOFF and eWeLink Zigbee devices, connects over Ethernet or Wi-Fi, and bridges them into Apple Home, Google Home and Alexa through Matter, with local control that keeps working when the internet drops.
What It Does Well

A Zigbee Hub for the Whole Home
A round white hub with a status light at the front, shown with its ZBBridge-U retail box. It pairs Zigbee switches, sensors, plugs and radiator valves, and adds them to the eWeLink app for control and smart scenes.

Matter Bridge to Apple, Google and Alexa
With a Matter hub (such as a HomePod or Apple TV) on the same network, the bridge passes its Zigbee devices, your eWeLink devices and Home Assistant devices into Apple Home, Google Home, Alexa and other Matter platforms. Devices synced this way stay controllable on your LAN even when the internet is down.

Works with Home Assistant
Set up an MQTT broker and the bridge syncs its Zigbee devices to Home Assistant, so you can manage the same switches, plugs, thermostatic valves and water valves from the eWeLink app and from Home Assistant.

1.5 GHz, 1 GB DDR4, 8 GB eMMC
An EFR32MG21 Zigbee 3.0 radio works with a 1.5 GHz dual-core processor, 1 GB of DDR4 and 8 GB of eMMC storage. SONOFF's lab tests rate it for up to 256 Zigbee sub-devices and up to 200 m of range in open space with Turbo mode on.
Verified Specifications
| Brand | SONOFF |
| Model | ZBBridge-U (Zigbee Bridge Ultra) |
| Zigbee Chip | EFR32MG21, Zigbee 3.0 |
| Processor / Memory / Storage | 1.5 GHz dual-core CPU, 1 GB DDR4, 8 GB eMMC |
| Sub-devices | Up to 256 (end devices and routers); up to 32 directly connected end devices |
| Zigbee Range | 100 m default, 200 m in Turbo (wall-penetration) mode, both in open outdoor space; about 10 m through walls indoors |
| Wireless | Wi-Fi IEEE 802.11 b/g/n 2.4 GHz, Zigbee 3.0 |
| Wired Network | RJ45 Ethernet, 10/100 Mbps |
| Smart Home Platforms | eWeLink app; Matter bridge to Apple Home, Google Home, Alexa and others (Matter hub needed); Matter hub for eWeLink |
| Home Assistant | Via an MQTT broker |
| Security Functions | Home, away and sleep modes, sound alarm, push notifications |
| Power Input | USB-C, 5 V โ 1 A |
| Casing | PC + ABS |
| Operating Conditions | -10 ยฐC to 40 ยฐC, 5% โ 95% RH, non-condensing |
