SONOFF ZBMINI Extreme

Quick verdict

The ZBMINI Extreme lives up to its name — it's extremely small and doesn't need a neutral wire. That combination makes it the go-to relay for older homes with cramped switch boxes. It joins your Zigbee mesh as an end device, runs fully local through zigbee2mqtt or ZHA, and costs next to nothing. If your switch box is tight and neutral-less, this is your answer.

Standout: No neutral wire required in an ultra-compact Zigbee relay — the smallest no-neutral option available.

Last checked: 2026-03-25

Compatibility snapshot

Why it stands out

• no neutral wire required — works in older homes with two-wire switch boxes
• extremely small form factor — fits in the tightest switch boxes
• fully local Zigbee operation with no cloud account and no Wi-Fi traffic

Reasons to hesitate

• requires a Zigbee coordinator
• on/off only — no dimming capability
• no direct voice assistant control without bridging through Home Assistant
• runs as a Zigbee end device, so it will not repeat for other devices or extend your mesh

Best for

• older homes without neutral wires that need smart relays
• cramped switch boxes where standard relays won't fit

Avoid if

• you have no Zigbee coordinator
• you need dimming functionality

Privacy and local-control notes

Pure Zigbee device. No cloud, no Wi-Fi, no data leaves your local network. Requires a Zigbee coordinator.

Home Assistant support: supported · integration path: zigbee2mqtt / ZHA.

Buying reality check

Price notes: Very affordable. The no-neutral capability at this price is exceptional value.

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