Winner
10% OFF
$179.99
$199.99
Updated November 2026
Data from the official Refoss and Zemismart sites.
2026 verdict
Refoss EM16P wins the 2026 matchup against Zemismart SDM01, mainly on connectivity, local control, and load management.
The main reason it wins is connectivity, local control, and load management, and its broader overall balance strengthens that case. Choose Zemismart SDM01 only if price matters more to you than the broader advantage from Refoss EM16P. That is why the final call still favors Refoss EM16P.
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| Feature | Refoss EM16P | Zemismart SDM01 | Winner |
|---|---|---|---|
| Price | $179.99 | $82.61 | Zemismart SDM01 |
| Connectivity | 2.4 GHz WiFi, Bluetooth | Zigbee | Refoss EM16P |
| Local Control | Local API, MQTT, Local Web Interface | None | Refoss EM16P |
| Load Management | YES | NO | Refoss EM16P |
| Metering | Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings | Three-Phase Support, Solar Net Metering, Power Factor Readings | Tie |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Integrations | Home Assistant | Home Assistant | Tie |
| Data & Monitoring | Energy Cost Tracking, Data Export, Usage Alerts | Usage Alerts | Tie |
| Relay Output | NO | NO | Tie |
| Local Control | YES | YES | Tie |
Winner
10% OFF
$179.99
$199.99
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- + Local Control: Local API, MQTT, Local Web Interface
- + Load Management: YES
- - Price: $179.99 vs $82.61
50% OFF
$82.61
$165.22
- + Price: $82.61
- - Connectivity: Zigbee vs 2.4 GHz WiFi, Bluetooth
- - Local Control: None vs Local API, MQTT, Local Web Interface
Frequently Asked Questions
Which is better overall: Refoss EM16P or Zemismart SDM01?
Refoss EM16P has the stronger overall profile in this comparison, especially for connectivity, local control, and load management.
What is the biggest difference between Refoss EM16P and Zemismart SDM01?
Price is one of the clearest differences: Refoss EM16P lists $179.99, while Zemismart SDM01 lists $82.61.
Which one looks better on price?
Refoss EM16P is listed at $179.99, while Zemismart SDM01 is listed at $82.61. Zemismart SDM01 (better spec).
Who should buy Refoss EM16P?
Choose Refoss EM16P if your priority is connectivity and local control and that matters more than price.
Who should buy Zemismart SDM01?
Choose Zemismart SDM01 if your priority is price and that matters more than connectivity.
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