⚡ SONOFF MINI PM — Matter WiFi Smart Power Meter 16A (MINI-1GP)
Know exactly what every circuit uses — without switching anything. The SONOFF MINI PM (MINI-1GP) is a compact Matter-over-WiFi energy meter that monitors up to 16A with bidirectional metering — so it tracks solar generation as well as consumption. Stores up to one year of data locally, viewable in the eWeLink app, the built-in local web console (no cloud needed), or Home Assistant. Built on the ESP32-C6. MPN: MINI-1GP.
Meter only, or meter + switch? Choose your MINI:
⚡ Key Features
- 16A Bidirectional Energy Metering — measures power flowing in both directions, so it tracks grid consumption and solar export on the same circuit
- One Year of Local Data — up to 12 months of energy history stored on the device itself; survives WiFi and cloud outages
- Local Web Console — view live power and history from a browser on your LAN; no cloud account or app required
- Matter over WiFi — native Matter support plus eWeLink; built on the ESP32-C6
- Appliance-Finished Alerts — get notified when power drops below a threshold ("washing machine is done"), with a delay filter for fill/drain cycles
- Maintenance Tracking — runtime-based reminders, e.g. service the borehole pump or pool pump after X hours
- Open Integrations — JSON-RPC 2.0 via HTTP, WebSocket and MQTT; works with Home Assistant, openHAB, ioBroker and Node-RED
- Compact DIY Size — 32 × 29 × 15.9 mm; fits behind a wall box or in the DB with 0.75–2.5 mm² wiring
🏠 Perfect For
Solar Monitoring
Wire it onto your inverter feed or a backed-up circuit — bidirectional metering shows exactly what you generate vs what you draw from Eskom.
Geyser & Pool Pump Costing
Measure the real kWh of your biggest consumers and build automations around actual usage, not guesses.
Appliance Notifications
"Washing machine finished" alerts when power drops below your threshold — with a smart delay so fill cycles don't trigger it early.
Home Assistant Energy
Feed accurate per-circuit readings into the Home Assistant Energy dashboard via MQTT or the native integration.
🔄 Which MINI Energy Meter?
| Feature | MINI-1GP (This Product) | MINI-1GSP | MINI-ZB1GP |
|---|---|---|---|
| Switching | No — meter only | Yes — 16A switch | No — meter only |
| Protocol | WiFi + Matter | WiFi + Matter | Zigbee 3.0 (hub required) |
| Bidirectional (Solar) | Yes | Yes | Yes |
| Local Data | Up to 1 year | Up to 1 year | Via hub |
| Local Web Console | Yes | Yes | No |
📋 Technical Specifications
| Product | SONOFF MINI PM Matter-over-WiFi Power Meter (Non-Switch) |
| MPN / Model | MINI-1GP |
| Function | Energy monitoring only — no relay / no switching |
| Input | 100–240V~ 50/60Hz |
| Max Current | 16A |
| Metering | Bidirectional (consumption + generation) |
| Data Storage | Up to 1 year stored locally on-device |
| Chip | ESP32-C6 |
| WiFi | IEEE 802.11 b/g/n 2.4 GHz |
| Matter | Matter over WiFi |
| Local APIs | JSON-RPC 2.0 over HTTP · WebSocket · MQTT · Local web console |
| Integrations | eWeLink · Home Assistant · openHAB · ioBroker · Node-RED |
| Wiring | 0.75–2.5 mm² (18–14 AWG) |
| Dimensions / Weight | 32 × 29 × 15.9 mm · 14 g |
| Operating Temp | -10°C to +40°C |
| Certifications | FCC / CE / RoHS |
| Warranty | 1 Year Manufacturer Warranty |
❓ Frequently Asked Questions
Can it switch my geyser on and off?
Does it measure solar export?
Does it work without internet?
Does it work with Home Assistant?
Do I need a neutral wire?
🤝 Need Help? We're Here for You!
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8 Wildebraam Street
Weltevreden Park, Roodepoort
Gauteng, 1709
Measure Everything. Switch Nothing.
16A bidirectional metering · 1 year local data · Matter.
