Refoss EM16P vs Sonoff MINI PM Matter Over WiFi Power Meter (Non-Switch)

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

Daily data 5 years, hourly 2 years, minute 2 months, plus 7 days of minute data stored locally

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

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

Zero feed-in and peak management automations

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

Alexa has no energy meter device type and this meter has no relay to expose as a switch, so a skill has nothing to publish

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

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

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

2 x 200 A mains and 16 x 60 A branch sensors

Inline measurement, no current transformer involved

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

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

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