Sonoff ZBMINI Review: A Dependable Zigbee Relay That Doubles as a Network Router
A compact, neutral-wire Zigbee switch that installers praise for reliability and its bonus role strengthening the whole mesh.
The Sonoff ZBMINI is a small in-wall Zigbee relay built to turn an existing switch, ceiling fan, or light fixture into a smart one, and because it stays powered through a neutral wire, it also works as a Zigbee router that helps extend the mesh to other devices. Buyers running Home Assistant, Zigbee2MQTT, Hubitat, and SmartThings consistently describe it as reliable and easy to add to a mesh, with some installers reporting dozens of units running trouble-free for years. The trade-offs are a tight fit in some switch boxes and a requirement for a neutral wire, so it suits buyers with existing neutral wiring more than a full DIY-everywhere solution. Overall it holds up as one of the most dependable budget Zigbee relays for retrofitting switches and fixtures.
- Home Assistant / Zigbee2MQTT / Hubitat users
- Retrofitting switches, fans, and light fixtures
- Strengthening a Zigbee mesh network
- Budget-conscious DIY smart home builds
Pros
- Reliable Zigbee performance reported across large-scale installs
- Acts as a Zigbee router, helping extend the mesh to other devices
- Broad hub compatibility: Home Assistant, Hubitat, SmartThings, Philips Hue
- Compact size fits inside standard switch boxes
- Handles up to 2200W / 10A resistive loads
- Works with Google Home, Alexa, and IFTTT
Cons
- Requires a neutral wire, not suited to no-neutral switch boxes
- Small size can make wiring fiddly for some installers
- No energy monitoring, dry contact mode, or power-off memory
- No Apple HomeKit or Matter support
- A minority of buyers report occasional Zigbee connection drops
Who is the Sonoff ZBMINI for?
The ZBMINI is designed for anyone with a neutral wire available at the switch or fixture who wants to add Zigbee-based smart control without replacing the entire switch plate. Its rated 2200W resistive load and 10A capacity cover typical lighting, fan, and appliance circuits, and because it draws continuous power it can also act as a Zigbee router, relaying signals for other Zigbee devices nearby. It requires a Zigbee hub or coordinator such as a Sonoff Zigbee Bridge, SmartThings hub, Philips Hue bridge, or a Zigbee2MQTT dongle, making it best suited to buyers already building out a Zigbee-based smart home rather than a plug-and-play Wi-Fi solution.
What buyers love
Reliability is the standout theme: multiple long-time users describe installing large numbers of these switches, some citing 50 or more units, and reporting consistent, trouble-free operation with Zigbee2MQTT and various coordinator brands, matching its zigbee-router capability. Buyers also value its broad hub compatibility, mentioning successful pairing with Home Assistant, Hubitat, Samsung SmartThings, and even Philips Hue bridges. Several reviewers highlight that it fits inside a normal switch box with room to spare and pairs quickly once wired correctly, and its automations support comes through in real setups tying it to motion sensors and voice assistants.
What to know before you buy
Because it requires a neutral wire, it will not work in switch boxes without one (Sonoff's no-neutral models cover that case instead). A few reviewers found the small size made wiring fiddly, and at least one buyer reported it not fitting a standard US electrical box and not including the gauge wire needed for the connection, so checking box space and having extra wire on hand is worth doing beforehand. It does not include energy monitoring, dry contact mode, or power-off memory, does not support Apple HomeKit or Matter, and a handful of reviewers reported connection drops with certain other Zigbee ecosystems, which typically improved with a stronger mesh or different coordinator.
Is the Sonoff ZBMINI worth it?
For neutral-wire installations, the ZBMINI has built a strong reputation among experienced Zigbee and Home Assistant users as an affordable, dependable relay that also strengthens the broader mesh as a router. Its wide hub compatibility and track record across large-scale installs make it a sound choice for anyone standardizing on Zigbee, as long as neutral wiring is present and box space has been checked.
Frequently asked questions
Does the Sonoff ZBMINI need a neutral wire?
Yes, it requires a neutral wire to operate, unlike Sonoff's no-neutral relay models.
Can the Sonoff ZBMINI act as a Zigbee router?
Yes, since it stays continuously powered, it can relay Zigbee signals for other devices, helping extend and strengthen the mesh network.
What hub does the Sonoff ZBMINI need?
It requires a Zigbee 3.0 hub or coordinator, such as a Sonoff Zigbee Bridge, a Samsung SmartThings hub, a Philips Hue bridge, or a Zigbee2MQTT-compatible dongle. It has no built-in Wi-Fi.
How much load can the Sonoff ZBMINI handle?
It is rated for up to 2200W and 10A on resistive loads such as standard lighting circuits.
Does the Sonoff ZBMINI have energy monitoring?
No, this model does not track power consumption.









