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 SPM02 because of connectivity, integrations, and local control.
Its clearest strengths are connectivity, integrations, and local control, and it still looks stronger on load management. Zemismart SPM02 is the better fit only for buyers who prioritize price above everything else here. That is why Shelly Pro 3EM 3CT63 wins the verdict here.
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| Feature | Shelly Pro 3EM 3CT63 | Zemismart SPM02 | Winner |
|---|---|---|---|
| Price | $150.99 | $42.60 | Zemismart SPM02 |
| Connectivity | 2.4 GHz WiFi, Ethernet, Bluetooth, Other | Zigbee | Shelly Pro 3EM 3CT63 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | 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 |
| Metering | Three-Phase Support, Solar Net Metering, Power Factor Readings | Three-Phase Support, Solar Net Metering | 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 | Usage Alerts | Tie |
| Relay Output | NO | NO | Tie |
| Local Control | YES | YES | Tie |
Winner
$150.99
- + 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: $150.99 vs $42.60
40% OFF
$42.60
$70.99
- + Price: $42.60
- - Connectivity: Zigbee vs 2.4 GHz WiFi, Ethernet, Bluetooth, Other
- - Integrations: Home Assistant vs Google Home, Alexa, Samsung SmartThings, Home Assistant
Frequently Asked Questions
Which is better overall: Shelly Pro 3EM 3CT63 or Zemismart SPM02?
Shelly Pro 3EM 3CT63 has the stronger overall profile in this comparison, especially for connectivity, integrations, and local control.
What is the biggest difference between Shelly Pro 3EM 3CT63 and Zemismart SPM02?
Price is one of the clearest differences: Shelly Pro 3EM 3CT63 lists $150.99, while Zemismart SPM02 lists $42.60.
Which one looks better on price?
Shelly Pro 3EM 3CT63 is listed at $150.99, while Zemismart SPM02 is listed at $42.60. Zemismart SPM02 (better spec).
Who should buy Shelly Pro 3EM 3CT63?
Choose Shelly Pro 3EM 3CT63 if your priority is connectivity and integrations and that matters more than price.
Who should buy Zemismart SPM02?
Choose Zemismart SPM02 if your priority is price and that matters more than connectivity.
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