Energy Monitors · Head to head

Shelly Pro EM-50 vs Zemismart SPM02

Full Smart Energy Monitors comparison in 2026

Updated September 2026
Data from Amazon and official Shelly and Zemismart sites.
2026 verdict
In 2026, the recommendation leans toward Shelly Pro EM-50 over Zemismart SPM02, driven by connectivity, integrations, and data & monitoring.
Shelly Pro EM-50
Winner
Shelly Pro EM-50
$119.99
Buy on Amazon USACheck price
It wins the broader comparison through connectivity, integrations, and data & monitoring, while local control and relay output help confirm the result. Pick Zemismart SPM02 only when price is the deciding factor for your setup. Overall, Shelly Pro EM-50 makes more sense for most people.
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FeatureShelly Pro EM-50Zemismart SPM02Winner
Price$119.99$42.60Zemismart SPM02
Connectivity2.4 GHz WiFi, Ethernet, Bluetooth, OtherZigbeeShelly Pro EM-50
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantHome AssistantShelly Pro EM-50
Data & MonitoringEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsUsage AlertsShelly Pro EM-50
Local ControlLocal API, MQTT, Local Web InterfaceNoneShelly Pro EM-50
Relay OutputYESNOShelly Pro EM-50
Load ManagementYESNOShelly Pro EM-50
MeteringSolar Net Metering, Power Factor ReadingsThree-Phase Support, Solar Net MeteringTie
Breaker Panel InstallYESYESTie
Smart Meter PortNONOTie
Winner
Shelly

Shelly Pro EM-50

$119.99
Buy on Amazon USACheck price
  • + Connectivity: 2.4 GHz WiFi, Ethernet, Bluetooth, Other
  • + Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant
  • + Data & Monitoring: Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts
  • - Price: $119.99 vs $42.60

Frequently Asked Questions

Which is better overall: Shelly Pro EM-50 or Zemismart SPM02?

Shelly Pro EM-50 has the stronger overall profile in this comparison, especially for connectivity, integrations, and data & monitoring.

What is the biggest difference between Shelly Pro EM-50 and Zemismart SPM02?

Price is one of the clearest differences: Shelly Pro EM-50 lists $119.99, while Zemismart SPM02 lists $42.60.

Which one looks better on price?

Shelly Pro EM-50 is listed at $119.99, while Zemismart SPM02 is listed at $42.60. Zemismart SPM02 (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 SPM02?

Choose Zemismart SPM02 if your priority is price and that matters more than connectivity.

Full comparison table

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  • 46 specs compared
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