Open box Smart Home Gateway Sonoff Zigbee Bridge Max (Bridge-M) – Zigbee 3.0 Protocol, Ethernet RJ45 & Wi-Fi Connectivity, Native Matter Bridge Support, Extended Capacity of 128 Devices
Description
What does "open box" mean?
Open-box products are returned products with opened or damaged packaging, but fully checked from a technical point of view and completely functional. They come with the same warranty as new products.
Sonoff Zigbee Bridge Max (Bridge-M) is the ideal central pillar for any modern Smart Home network. Designed to completely eliminate the latency issues and random disconnections typical of classic Wi-Fi hubs, the Bridge-M offers a physical RJ45 Ethernetport, guaranteeing ultra-stable communication with the router and with local automation systems.
Built on the new Sonoff hardware architecture, the device works as a universal bridge (Matter Bridge). This technology allows native translation of the Zigbee devices connected to the bridge into the Matter standard, making it possible to control them directly from the Apple Home (HomeKit), Google Home, Amazon Alexa or Samsung SmartThings apps without the need for third-party apps or an additional cloud.
Key Features & Technical Advantages
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Hybrid LAN (Ethernet) & Wi-Fi Connectivity: The physical RJ45 port allows a direct cable connection to the local network, ensuring maximum stability and minimal response times when running automation routines.
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Native Matter Integrator (Matter Bridge): Turns Zigbee sensors, relays and switches from the Sonoff ecosystem into Matter-compatible devices. These can be exposed instantly in Apple HomeKit, Google Home or Alexa.
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Extended Capacity (Up to 128 Devices): Powerful hardware allows up to 128 Zigbee sub-devices (motion, door/window and temperature sensors, relays and smart plugs) to be connected at the same time, creating a solid mesh network.
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Local Execution of Scenes (Local Smart Scenes): Automations between the Zigbee devices connected to Bridge-M are executed locally on the hub. They keep working flawlessly even when the internet connection is completely down.
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Advanced Security & Encryption: Supports modern data encryption protocols and secure connections to protect the network against unauthorised access.
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Built-in Buzzer / Siren: It has an internal speaker (buzzer) that can be used as a siren for the home alarm system or as a smart chime when motion or door sensors are triggered.
Ways to Use It and Scenarios
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Universal Bridge for Apple Home (HomeKit): Connect affordable, reliable Sonoff Zigbee sensors (e.g. SNZB-02B, SNZB-04PR1) to the Bridge Max and control them directly from the Apple HomeKit app on iPhone, iPad or Mac via Matter.
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Local Security System: Arm the home from the app. If a motion or door sensor detects an intrusion, the Bridge Max immediately triggers the internal speaker as a warning siren and sends a critical notification to your phone.
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Climate Automation Without Internet: Create a local scene in which data sent by a Zigbee temperature sensor switches on a Zigbee smart plug for heating. The automation works locally even if the internet goes down.
Package Contents
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1 × Sonoff Zigbee Bridge Max Hub / Gateway (Bridge-M)
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1 × USB Type-C power cable
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1 × RJ45 Ethernet network cable
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1 × Quick start and setup guide
(Note: The 5V/1A USB plug adapter is not included and is sold separately).
Practical use cases
- Connected to the router via an Ethernet cable, it centralises the Zigbee sensors, relays and plugs in the home in the eWeLink app, with remote control.
- Through the Matter Bridge function, it brings Zigbee devices into Apple Home, Google Home or Amazon Alexa, without additional apps.
- Runs automations between Zigbee devices locally, so scenes keep working even when the internet is down.
Technical specifications:
| Model | SONOFF Bridge Max (Bridge-M) |
| Type | Zigbee + Matter bridge/gateway, with WiFi and Ethernet |
| Processor | SigmaStar SSD2351Q + EFR32MG21 |
| Power supply | 5V DC / 1A, USB Type-C |
| Connectivity | WiFi 802.11a/b/g/n/ac/ax (2.4G+5G), Zigbee (IEEE 802.15.4, up to 128 sub-devices), Ethernet RJ45 10/100Mbps |
| Dimensions | 82 x 82 x 28 mm |
| Weight | 83.4g |
| Housing | PC+ABS, white |
| Built-in siren | Yes (internal buzzer for alarms and notifications) |
| Control app | eWeLink (iOS / Android) |
| Operating temperature | -10°C ~ 40°C, humidity 5-95% RH |
| Compatibility | Matter Bridge - Apple Home, Amazon Alexa, Google Home, SmartThings, Home Assistant |
Bridge-M is the right choice for anyone who wants to centralise and remotely control all the Zigbee devices in a smart home.