

Overview
The ZBM5 is a Zigbee smart wall switch designed for homes where running a neutral wire is difficult. It supports both no-neutral and with-neutral wiring, so it can replace an existing switch without rewiring the room.
Once it is paired with a compatible Zigbee hub, you can switch lights from the wall, the eWeLink app or a voice assistant, and build timers, schedules and scenes around your daily routine.
- At a glance
- Brand
- SONOFF
- Model
- ZBM51CH
- Protocol
- Zigbee
- Wiring
- with or without neutral wire
- Compatible apps and assistants
- eWeLink, Alexa, Google Assistant, Home Assistant
What it does
Flexible wiring
supports both no-neutral and with-neutral installations.
Broad hub support
works with SONOFF NSPanel Pro, iHost, ZB Bridge series and ZBDongle-E or ZBDongle-P.
Home Assistant
connects through a Zigbee dongle such as the ZBDongle-P or ZBDongle-E.
Detach Relay Mode
smart bulbs keep receiving power while the wall switch is off.
Voice and app control
works with Alexa and Google Assistant, plus the eWeLink app for timers and schedules.
Scenes
create custom scenes and automations to suit your lifestyle.
Specifications
From the manufacturer's data. Check the label on the device if your installation depends on a rating.
| Protocol | Zigbee |
|---|---|
| Wiring | with or without neutral wire |
| Compatible apps and assistants | eWeLink, Alexa, Google Assistant, Home Assistant |
Before you install
- A compatible SONOFF Zigbee hub is needed for full functionality, and it is sold separately.
- Detach Relay Mode works only in neutral-wire setups.
- Home Assistant integration needs a Zigbee dongle, which is also sold separately.
- Anything wired into mains power should be fitted by a qualified electrician.


