Sonoff MINI PM Matter Over WiFi Power Meter (Non-Switch)

One circuit, the load wired through its L and L Out terminals

Inline measurement, no current transformer involved

Rated 100-240V~ 50/60Hz on a single line, so a 120/240 V split-phase service is out of scope

Bi-directional metering separates what the load consumes from what a balcony solar array produces, which the app can record as a negative value

SONOFF documents real-time voltage, current, power and accumulated energy, with no power factor reading

IEEE 802.11 b/g/n on 2.4 GHz, from an ESP32-C6

The spec sheet lists Wi-Fi only, while the FCC grant authorises a second 2402-2480 MHz transmitter, so the radio is there but SONOFF never documents it as a feature

The Zigbee version of this meter is a separate model, the MINI-ZB1GP

Up to one year of energy data, and going offline does not interrupt the recording

Custom currency and electricity rate, with the bill broken down in charts

Fixed or time-of-use pricing, with consumption shown per rate band

Energy data and electricity bills export to a spreadsheet, from the app and from the local console

Overcurrent, overpower, overvoltage and undervoltage thresholds, plus a run completion alert and a maintenance reminder based on accumulated runtime

SONOFF states this is a non-switch product that cannot control the load it measures

With no relay it can raise a threshold alert but cannot shed the load itself

Quick Scenes in eWeLink, and its readings drive automations in Home Assistant

Wires into live and neutral behind a socket or inside a junction box, and SONOFF recommends a wall box at least 60 mm deep

Indoor flush mounting only, with no rail clip

Reached by adding the meter to eWeLink and linking the account, the path SONOFF documents for this model

Reached by adding the meter to eWeLink and linking the account, the path SONOFF documents for this model

The meter is a Matter over Wi-Fi device, but SONOFF's own platform table marks Apple Home as not yet able to add it: the Home app still does not accept the Matter energy meter device type. Nothing on SONOFF's side is missing, so the meter gets in once Apple supports that type.

Reached through eWeLink account linking, and SONOFF notes SmartThings also reads the power consumption figures

SONOFF's platform table gives Home Assistant two routes, Matter and MQTT discovery, and both carry the voltage, current, power and energy readings

Matter over Wi-Fi: the device carries a Matter QR code and is commissioned by scanning it from a Matter app | Home Assistant is the one Matter controller that accepts it today, because the energy meter device type is not yet handled by the other ecosystems

JSON-RPC 2.0 over HTTP and WebSocket, documented as an open API

MQTT is configured from the device itself and is how Home Assistant reads the meter with no cloud in the path

The OpenEdge web console runs on the device and needs no app and no account