Sonoff Orb-ZBW2 Review: A Two-Gang Zigbee Switch That Also Boosts Your Mesh
The Orb-ZBW2 is Sonoff's two-gang Zigbee wall switch for people who already run a Zigbee coordinator, whether that is a Sonoff bridge, Home Assistant with ZHA or Zigbee2MQTT, or a hub from another brand. Each gang switches its own lighting circuit, and because the switch stays permanently powered it doubles as a Zigbee router that strengthens the mesh around it. Detach Relay Mode lets the paddle trigger a scene while leaving a smart bulb downstream powered. The two things to check before ordering are physical: a neutral wire at the switch box and a resistive load, since Sonoff publishes no rating for fans, motors or LED drivers.
- Zigbee and Home Assistant households
- Two-gang lighting circuits
- Wall boxes that carry a neutral wire
- Smart-bulb setups that want the paddle decoupled
- Extending a patchy Zigbee mesh
Pros
- Two independently switched circuits on one faceplate
- Doubles as a Zigbee router that strengthens the surrounding mesh
- Detach Relay Mode keeps smart bulbs powered while the paddle still sends commands
- Zigbee Binding drives paired devices directly, even with the gateway offline
- Integrates into Home Assistant through a Sonoff Zigbee dongle
- Voice control through Alexa and Google Assistant, and Apple Home through a Sonoff Matter bridge
- Configurable power-on state, timers, schedules and smart scenes
- Rated for 10A per gang and 16A total of resistive load across a 110-240V range
- Surge and overheat protection, a flame-retardant casing and a two-year warranty
Cons
- Requires a neutral wire at the switch box
- Rated for resistive loads only, with no rating for fans, motors or LED drivers
- No energy monitoring
- Needs a Zigbee coordinator, since there is no Wi-Fi, Bluetooth or Thread radio
- Apple Home and Matter need a separate Sonoff Matter bridge such as the ZBBridge-U or eWeLink CUBE
- The 33.7 mm deep body may not fit a shallow back box
Who is the Sonoff Orb-ZBW2 for?
This is a two-gang in-wall switch for replacing a standard double light switch with a connected one. It is built on Zigbee 3.0 and has no Wi-Fi, Bluetooth or Thread radio of its own, so it only makes sense in a home that already runs a Zigbee coordinator, such as a Sonoff bridge or Home Assistant with ZHA or Zigbee2MQTT. Each gang controls its own circuit, so one plate can cover two lighting zones, and external S1 and S2 inputs accept a conventional wall switch. It suits a box with a neutral wire on 110-240V wiring and resistive loads, and it keeps a physical paddle that works as an ordinary switch if the network drops.
What the Sonoff Orb-ZBW2 offers
The headline is dual-channel control: two independently switched circuits on one 86 x 86 mm faceplate, rated at 10A per gang and 16A total for resistive loads. Because the switch is always powered it works as a Zigbee router, repeating the mesh for nearby devices and extending coverage. Detach Relay Mode separates the physical switch from the relay, so pressing the button can run a Smart Scene while a smart bulb downstream stays powered. Zigbee Binding, configured in Home Assistant, lets the switch talk directly to other Zigbee devices with no gateway in the middle. Timers, schedules, smart scenes, a configurable power-on state and Zigbee 3.0 interoperability round out the feature set, and the unit carries surge and overheat protection in a flame-retardant casing. Voice control arrives through Alexa and Google Assistant over the eWeLink app, and Apple Home through a Sonoff Matter bridge such as the ZBBridge-U or eWeLink CUBE.
What to know before you buy
Wiring comes first: the Orb-ZBW2 requires a neutral wire at the switch box, so a box carrying only live and load cannot run it. It is rated for resistive loads only, up to 10A per gang and 16A total, and Sonoff publishes no inductive or capacitive rating, which rules out fans, motors and LED drivers. There is no power metering on this model. It also needs a Zigbee coordinator to be controlled remotely, since it has no Wi-Fi, Bluetooth or Thread radio, and reaching Apple Home or Matter takes a separate Sonoff Matter bridge. The body is 33.7 mm deep and the switch measures 86 x 86 mm, so a shallow or undersized back box may need attention, and it is a two-gang unit rather than a drop-in replacement for a single switch plate. The warranty runs two years.
Is the Sonoff Orb-ZBW2 worth it?
For a Zigbee household with the right wiring, it is an easy recommendation: two circuits on one plate, a mesh repeater built in, and a physical switch that keeps working locally with no cloud involved. Detach Relay Mode is the detail that matters for smart-bulb owners, since it stops the paddle cutting power to their bulbs, and Zigbee Binding keeps paired devices reachable even when the gateway is offline. The case weakens if the box has no neutral, if the load is inductive or capacitive, or if you need energy monitoring, because those are exactly what this model does not offer. It is a value pick for a Zigbee-first home rather than a fit for a Wi-Fi-only setup.
Frequently asked questions
Does the Sonoff Orb-ZBW2 need a neutral wire?
Yes. Sonoff states the Orb-ZBW2 requires a neutral wire for proper installation and operation, so a box carrying only live and load cannot run it.
Does it need a hub?
Yes, to be controlled remotely. It is a Zigbee 3.0 device with no Wi-Fi or Bluetooth, so it needs a Zigbee coordinator such as a Sonoff bridge or Home Assistant running ZHA or Zigbee2MQTT. It still works as an ordinary wall switch without one.
Does the Orb-ZBW2 work with Home Assistant?
Yes. Sonoff states it integrates into Home Assistant through a Sonoff ZBDongle, and its FAQ documents configuring Zigbee Binding from inside Home Assistant. It also works with Zigbee2MQTT and ZHA.
Does it work with Apple Home, Alexa and Google Home?
Alexa and Google Assistant work through the eWeLink app by cloud-to-cloud syncing. Apple Home needs a Sonoff Matter bridge such as the ZBBridge-U or eWeLink CUBE, which republishes the Zigbee switch into Matter.
How many circuits can it control and what load can it switch?
It has two independently controlled channels, each rated for 10A with a combined maximum of 16A for resistive loads. The rating is stated for resistive loads only, so inductive loads such as fans and motors and capacitive loads such as LED drivers are not covered.
Does the Orb-ZBW2 measure how much power the lights use?
No. Its specification and feature set do not include power metering.


