Relays · Head to head

Shelly 1 Gen3 vs Shelly 2PM Gen4

Full Smart Relays comparison in 2026

Updated June 2026
Data from Amazon and official Shelly site.
2026 verdict
In this 2026 Shelly 2PM Gen4 vs Shelly 1 Gen3 comparison, Shelly 2PM Gen4 comes out ahead thanks to rating, safety, and connectivity. The comparison tilts its way because of rating, safety, and connectivity, with energy monitoring and zibgee router keeping it in front. Choose Shelly 1 Gen3 only if price, dry contact mode, and wet contact mode matters more to you than the broader advantage from Shelly 2PM Gen4. That is why Shelly 2PM Gen4 wins the verdict here.
vs
FeatureShelly 1 Gen3Shelly 2PM Gen4Winner
Price$22.99$38.99Shelly 1 Gen3
Rating4.44.6Shelly 2PM Gen4
SafetyNoneOverheating protection, Overvoltage protection, Overcurrent protection, Overpower protectionShelly 2PM Gen4
ConnectivityBluetoothBluetooth, ZigbeeShelly 2PM Gen4
Energy MonitoringNOYESShelly 2PM Gen4
Dry Contact ModeYESNOShelly 1 Gen3
Wet Contact ModeYESNOShelly 1 Gen3
Zibgee RouterNOYESShelly 2PM Gen4
Relay Channels12Different strengths
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Power Off MemoryNONOTie

Frequently Asked Questions (FAQ)

Which is better overall: Shelly 1 Gen3 or Shelly 2PM Gen4?
Shelly 2PM Gen4 has the stronger overall profile in this comparison, especially for rating, safety, and connectivity.
What is the biggest difference between Shelly 1 Gen3 and Shelly 2PM Gen4?
Price is one of the clearest differences: Shelly 1 Gen3 lists $22.99, while Shelly 2PM Gen4 lists $38.99.
Which one looks better on price?
Shelly 1 Gen3 is listed at $22.99, while Shelly 2PM Gen4 is listed at $38.99. Shelly 1 Gen3 (better spec).
Who should buy Shelly 1 Gen3?
Choose Shelly 1 Gen3 if your priority is price and dry contact mode and that matters more than rating.
Who should buy Shelly 2PM Gen4?
Choose Shelly 2PM Gen4 if your priority is rating and safety and that matters more than price.
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