Winner
Updated November 2026
Data from the official Shelly and Zemismart sites.
2026 verdict
For most buyers in 2026, Shelly Pro 3EM 3CT63 is the safer pick over Zemismart SPM01 because of metering, connectivity, and integrations.
Its clearest strengths are metering, connectivity, and integrations, and it still looks stronger on local control and load management. Zemismart SPM01 is the better fit only for buyers who prioritize price above everything else here. For the average buyer, Shelly Pro 3EM 3CT63 is the safer choice.
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| Feature | Shelly Pro 3EM 3CT63 | Zemismart SPM01 | Winner |
|---|---|---|---|
| Price | $150.99 | $26.00 | Zemismart SPM01 |
| Metering | Three-Phase Support, Solar Net Metering, Power Factor Readings | Solar Net Metering, Power Factor Readings | Shelly Pro 3EM 3CT63 |
| Connectivity | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | Zigbee | Shelly Pro 3EM 3CT63 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Samsung SmartThings, Home Assistant | Shelly Pro 3EM 3CT63 |
| Local Control | Local API, MQTT, Local Web Interface | None | Shelly Pro 3EM 3CT63 |
| Load Management | YES | NO | Shelly Pro 3EM 3CT63 |
| 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 |
| Relay Output | NO | NO | Tie |
| Local Control | YES | YES | Tie |
Winner
$150.99
- + Metering: Three-Phase Support, Solar Net Metering, Power Factor Readings
- + Connectivity: 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
- - Price: $150.99 vs $26.00
40% OFF
$26.00
$43.33
- + Price: $26.00
- - Metering: Solar Net Metering, Power Factor Readings vs Three-Phase Support, Solar Net Metering, Power Factor Readings
- - Connectivity: Zigbee vs 2.4 GHz WiFi, Ethernet, Bluetooth, Other
Frequently Asked Questions
Which is better overall: Shelly Pro 3EM 3CT63 or Zemismart SPM01?
Shelly Pro 3EM 3CT63 has the stronger overall profile in this comparison, especially for metering, connectivity, and integrations.
What is the biggest difference between Shelly Pro 3EM 3CT63 and Zemismart SPM01?
Price is one of the clearest differences: Shelly Pro 3EM 3CT63 lists $150.99, while Zemismart SPM01 lists $26.00.
Which one looks better on price?
Shelly Pro 3EM 3CT63 is listed at $150.99, while Zemismart SPM01 is listed at $26.00. Zemismart SPM01 (better spec).
Who should buy Shelly Pro 3EM 3CT63?
Choose Shelly Pro 3EM 3CT63 if your priority is metering and connectivity and that matters more than price.
Who should buy Zemismart SPM01?
Choose Zemismart SPM01 if your priority is price and that matters more than metering.
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