Relays · Head to head

Shelly 2PM Gen3 vs Shelly 2PM Gen4

Full Smart Relays comparison in 2026

Updated April 2026
Data from Amazon and official Shelly site.
2026 verdict
Between Shelly 2PM Gen4 and Shelly 2PM Gen3, Shelly 2PM Gen4 is the better overall pick in 2026, leading on safety, connectivity, and integrations. Its biggest wins come from safety, connectivity, and integrations, and zibgee router adds more confidence to the verdict. You should still consider Shelly 2PM Gen3 if price matters more than raw overall balance. That keeps the verdict firmly in favor of Shelly 2PM Gen4.
FeatureShelly 2PM Gen3Shelly 2PM Gen4Winner
Price$24.99$38.99Shelly 2PM Gen3
SafetyNoneOverheating protection, Overvoltage protection, Overcurrent protection, Overpower protectionShelly 2PM Gen4
ConnectivityBluetoothBluetooth, ZigbeeShelly 2PM Gen4
IntegrationsGoogle Home, Alexa, Apple HomeKit, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterShelly 2PM Gen4
Zibgee RouterNOYESShelly 2PM Gen4
Rating4.64.6Tie
Relay Channels22Tie
Energy MonitoringYESYESTie
Power Off MemoryNONOTie
Dry Contact ModeNONOTie
Wet Contact ModeNONOTie

Frequently Asked Questions (FAQ)

Which is better overall: Shelly 2PM Gen3 or Shelly 2PM Gen4?
Shelly 2PM Gen4 has the stronger overall profile in this comparison, especially for safety, connectivity, and integrations.
What is the biggest difference between Shelly 2PM Gen3 and Shelly 2PM Gen4?
Price is one of the clearest differences: Shelly 2PM Gen3 lists $24.99, while Shelly 2PM Gen4 lists $38.99.
Which one looks better on price?
Shelly 2PM Gen3 is listed at $24.99, while Shelly 2PM Gen4 is listed at $38.99. Shelly 2PM Gen3 (better spec).
Who should buy Shelly 2PM Gen3?
Choose Shelly 2PM Gen3 if your priority is price and that matters more than safety.
Who should buy Shelly 2PM Gen4?
Choose Shelly 2PM Gen4 if your priority is safety and connectivity and that matters more than price.
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