Not available on Amazon USA
Data from Amazon and official Refoss and Zemismart sites.
2026 verdict
Zemismart SPM02 wins the 2026 matchup against Refoss EM01P, mainly on metering and breaker panel install.
The comparison tilts its way because of metering and breaker panel install, with its broader overall balance keeping it in front. Refoss EM01P still makes sense if smart meter port and local control are your priority, but most buyers should still lean toward Zemismart SPM02. For the average buyer, Zemismart SPM02 is the safer choice.
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| Feature | Refoss EM01P | Zemismart SPM02 | Winner |
|---|---|---|---|
| Metering | Solar Net Metering | Three-Phase Support, Solar Net Metering | Zemismart SPM02 |
| Breaker Panel Install | NO | YES | Zemismart SPM02 |
| Smart Meter Port | YES | NO | Refoss EM01P |
| Local Control | Local API, MQTT, Local Web Interface | None | Refoss EM01P |
| Connectivity | 2.4 GHz WiFi | Zigbee | Tie |
| Integrations | Home Assistant | Home Assistant | Tie |
| Data & Monitoring | Energy Cost Tracking, Data Export | Usage Alerts | Tie |
| Relay Output | NO | NO | Tie |
| Load Management | NO | NO | Tie |
Not available on Amazon USA
- + Smart Meter Port: YES
- + Local Control: Local API, MQTT, Local Web Interface
- - Metering: Solar Net Metering vs Three-Phase Support, Solar Net Metering
- - Breaker Panel Install: NO vs YES
Winner
40% OFF
$42.60
$70.99
- + Metering: Three-Phase Support, Solar Net Metering
- + Breaker Panel Install: YES
- - Smart Meter Port: NO vs YES
- - Local Control: None vs Local API, MQTT, Local Web Interface
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Refoss EM01P
- Zemismart SPM02
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Frequently Asked Questions
Which is better overall: Refoss EM01P or Zemismart SPM02?
Zemismart SPM02 has the stronger overall profile in this comparison, especially for metering and breaker panel install.
What is the biggest difference between Refoss EM01P and Zemismart SPM02?
Metering is one of the clearest differences: Refoss EM01P lists Solar Net Metering, while Zemismart SPM02 lists Three-Phase Support, Solar Net Metering.
Who should buy Refoss EM01P?
Choose Refoss EM01P if your priority is smart meter port and local control and that matters more than metering.
Who should buy Zemismart SPM02?
Choose Zemismart SPM02 if your priority is metering and breaker panel install and that matters more than smart meter port.
Full comparison table
Compare all 25 Energy Monitors side by side
You are looking at two of them. The full table lines up all Energy Monitors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 25 Energy Monitors
- 46 specs compared
- 43 filters
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EM01P
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