Energy Monitors · Head to head

Shelly Pro 3EM 3CT63 vs Shelly Pro EM-50

Full Smart Energy Monitors comparison in 2026

Updated September 2026
Data from Amazon and official Shelly site.
2026 verdict
For most buyers in 2026, Shelly Pro EM-50 is the safer pick over Shelly Pro 3EM 3CT63 because of price, rating, and relay output.
Shelly Pro EM-50
Winner
Shelly Pro EM-50
$119.99
Buy on Amazon USACheck price
It separates itself most clearly on price, rating, and relay output, while still looking better on its broader overall balance. Shelly Pro 3EM 3CT63 is the better fit only for buyers who prioritize warranty and metering above everything else here. For most setups, Shelly Pro EM-50 is the smarter buy.
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FeatureShelly Pro 3EM 3CT63Shelly Pro EM-50Winner
Price$150.99$119.99Shelly Pro EM-50
Rating4.44.6Shelly Pro EM-50
Warranty5 years3 yearsShelly Pro 3EM 3CT63
MeteringThree-Phase Support, Solar Net Metering, Power Factor ReadingsSolar Net Metering, Power Factor ReadingsShelly Pro 3EM 3CT63
Relay OutputNOYESShelly Pro EM-50
Breaker Panel InstallYESYESTie
Smart Meter PortNONOTie
Connectivity2.4 GHz WiFi, Ethernet, Bluetooth, Other2.4 GHz WiFi, Ethernet, Bluetooth, OtherTie
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Samsung SmartThings, Home AssistantTie
Data & MonitoringEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsTie
Local ControlLocal API, MQTT, Local Web InterfaceLocal API, MQTT, Local Web InterfaceTie
Load ManagementYESYESTie
Winner
Shelly

Shelly Pro EM-50

$119.99
Buy on Amazon USACheck price
  • + Price: $119.99
  • + Rating: 4.6
  • + Relay Output: YES
  • - Warranty: 3 years vs 5 years
  • - Metering: Solar Net Metering, Power Factor Readings vs Three-Phase Support, Solar Net Metering, Power Factor Readings

Frequently Asked Questions

Which is better overall: Shelly Pro 3EM 3CT63 or Shelly Pro EM-50?

Shelly Pro EM-50 has the stronger overall profile in this comparison, especially for price, rating, and relay output.

What is the biggest difference between Shelly Pro 3EM 3CT63 and Shelly Pro EM-50?

Price is one of the clearest differences: Shelly Pro 3EM 3CT63 lists $150.99, while Shelly Pro EM-50 lists $119.99.

Which one looks better on price?

Shelly Pro 3EM 3CT63 is listed at $150.99, while Shelly Pro EM-50 is listed at $119.99. Shelly Pro EM-50 (better spec).

Who should buy Shelly Pro 3EM 3CT63?

Choose Shelly Pro 3EM 3CT63 if your priority is warranty and metering and that matters more than price.

Who should buy Shelly Pro EM-50?

Choose Shelly Pro EM-50 if your priority is price and rating and that matters more than warranty.

Full comparison table

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  • 46 specs compared
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