Winner
Updated November 2026
Data from the official Shelly and Zemismart sites.
2026 verdict
In 2026, the recommendation leans toward Shelly Pro EM-50 over Zemismart SPM01, driven by connectivity, integrations, and local control.
It wins the broader comparison through connectivity, integrations, and local control, while relay output and load management help confirm the result. Pick Zemismart SPM01 only when price is the deciding factor for your setup. That is why Shelly Pro EM-50 wins the verdict here.
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| Feature | Shelly Pro EM-50 | Zemismart SPM01 | Winner |
|---|---|---|---|
| Price | $119.99 | $26.00 | Zemismart SPM01 |
| Connectivity | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | Zigbee | Shelly Pro EM-50 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Samsung SmartThings, Home Assistant | Shelly Pro EM-50 |
| Local Control | Local API, MQTT, Local Web Interface | None | Shelly Pro EM-50 |
| Relay Output | YES | NO | Shelly Pro EM-50 |
| Load Management | YES | NO | Shelly Pro EM-50 |
| Metering | Solar Net Metering, Power Factor Readings | Solar Net Metering, Power Factor Readings | Tie |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Data & Monitoring | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | None | Tie |
| Local Control | YES | YES | Tie |
Winner
$119.99
- + Connectivity: 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- + Local Control: Local API, MQTT, Local Web Interface
- - Price: $119.99 vs $26.00
40% OFF
$26.00
$43.33
- + Price: $26.00
- - Connectivity: Zigbee vs 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- - Integrations: Samsung SmartThings, Home Assistant vs Google Home, Alexa, Samsung SmartThings, Home Assistant
Frequently Asked Questions
Which is better overall: Shelly Pro EM-50 or Zemismart SPM01?
Shelly Pro EM-50 has the stronger overall profile in this comparison, especially for connectivity, integrations, and local control.
What is the biggest difference between Shelly Pro EM-50 and Zemismart SPM01?
Price is one of the clearest differences: Shelly Pro EM-50 lists $119.99, while Zemismart SPM01 lists $26.00.
Which one looks better on price?
Shelly Pro EM-50 is listed at $119.99, while Zemismart SPM01 is listed at $26.00. Zemismart SPM01 (better spec).
Who should buy Shelly Pro EM-50?
Choose Shelly Pro EM-50 if your priority is connectivity and integrations and that matters more than price.
Who should buy Zemismart SPM01?
Choose Zemismart SPM01 if your priority is price and that matters more than connectivity.
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