Relays · Head to head

Shelly 1 Gen3 vs Shelly 1 Gen4

Full Smart Relays comparison in 2026

Updated June 2026
Data from Amazon and official Shelly site.
2026 verdict
Shelly 1 Gen4 has the better all-around case than Shelly 1 Gen3 in 2026, starting with safety, connectivity, and zibgee router. The main reason it wins is safety, connectivity, and zibgee router, and its broader overall balance strengthens that case. Pick Shelly 1 Gen3 only when price is the deciding factor for your setup. Overall, Shelly 1 Gen4 makes more sense for most people.
FeatureShelly 1 Gen3Shelly 1 Gen4Winner
Price$22.99$24.99Shelly 1 Gen3
SafetyNoneOverheating protectionShelly 1 Gen4
ConnectivityBluetoothBluetooth, ZigbeeShelly 1 Gen4
Zibgee RouterNOYESShelly 1 Gen4
Rating4.44.4Tie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
Relay Channels11Tie
Energy MonitoringNONOTie
Power Off MemoryNONOTie
Dry Contact ModeYESYESTie
Wet Contact ModeYESYESTie

Frequently Asked Questions (FAQ)

Which is better overall: Shelly 1 Gen3 or Shelly 1 Gen4?
Shelly 1 Gen4 has the stronger overall profile in this comparison, especially for safety, connectivity, and zibgee router.
What is the biggest difference between Shelly 1 Gen3 and Shelly 1 Gen4?
Price is one of the clearest differences: Shelly 1 Gen3 lists $22.99, while Shelly 1 Gen4 lists $24.99.
Which one looks better on price?
Shelly 1 Gen3 is listed at $22.99, while Shelly 1 Gen4 is listed at $24.99. Shelly 1 Gen3 (better spec).
Who should buy Shelly 1 Gen3?
Choose Shelly 1 Gen3 if your priority is price and that matters more than safety.
Who should buy Shelly 1 Gen4?
Choose Shelly 1 Gen4 if your priority is safety and connectivity and that matters more than price.
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