Multiprotocol in-wall dimmer with trailing-edge dimming up to 200 W, optional no-neutral operation, and power metering when wired with neutral. Connects over Wi-Fi, Bluetooth, Zigbee, or Matter so it fits almost any smart home stack.
Works on integrations
Protocols
One mode at a time: the device serves one of these combinations, not all of them at once.
Setup guides
Roles it can fill
Native Shelly integration, local, no cloud required (also MQTT); pair instead over Zigbee (ZHA or Zigbee2MQTT) or Matter over Wi-Fi. Trailing-edge dimming to 200 W, runs with or without neutral, and reports voltage/current/power when wired with neutral.
Entities in Home Assistant
18 entities via zigbee2mqtt
Primary entities 13 What automations and dashboards use.
| Entity | Type | Device class | Unit |
|---|---|---|---|
| Light (main) | light | — | — |
| Effect | select | — | — |
| Current | sensor | current | A |
| Energy | sensor | energy | kWh |
| Power | sensor | power | W |
| Voltage | sensor | voltage | V |
| Wi-Fi Configuration: Wi-Fi enabled | switch | — | — |
| Wi-Fi Configuration: DNS | text | — | — |
| Wi-Fi Configuration: Gateway | text | — | — |
| Wi-Fi Configuration: IPv4 address | text | — | — |
| Wi-Fi Configuration: Network | text | — | — |
| Wi-Fi Configuration: Network mask | text | — | — |
| Wi-Fi Configuration: Password | text | — | — |
Configuration 2 Settings exposed as entities, tunable from Home Assistant.
| Entity | Type | Device class | Unit |
|---|---|---|---|
| Identify | select | — | — |
| Power-on behavior | select | — | — |
Diagnostics 3 Health and troubleshooting values, hidden from dashboards by default.
| Entity | Type | Device class | Unit |
|---|---|---|---|
| DHCP enabled | binary_sensor | — | — |
| IP address | sensor | — | — |
| Wi-Fi status | sensor | — | — |
From the zigbee2mqtt device database (zigbee-herdsman-converters
26.108.1):
the entities zigbee2mqtt creates for
S4DM-0A101WWL.
Paired through ZHA instead, the same hardware produces a different set.
Where to buy
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