Sonoff Wifi Smart Plug S40 vs Sonoff Wifi Smart Plug S40 Lite

Full Smart Plugs comparison in 2026

Updated March 2026
Data from Amazon and official Sonoff site.
2026 verdict
For this 2026 head-to-head, Sonoff Wifi Smart Plug S40 has the better all-around case. Its biggest wins come from rating, maximum load power, and overheat/overload protection, and energy monitoring adds more confidence to the verdict. Sonoff Wifi Smart Plug S40 Lite is the better fit only for buyers who prioritize price above everything else here. That is why Sonoff Wifi Smart Plug S40 wins the verdict here.
vs
FeatureSonoff Wifi Smart Plug S40Sonoff Wifi Smart Plug S40 LiteWinner
Price$18.99$11.99Sonoff Wifi Smart Plug S40 Lite
Rating4.44.1Sonoff Wifi Smart Plug S40
Maximum Load Power1800W1500WSonoff Wifi Smart Plug S40
Overheat/Overload ProtectionYESNOSonoff Wifi Smart Plug S40
Energy MonitoringYESNOSonoff Wifi Smart Plug S40
Warranty1 year1 yearTie
Weather ResistanceNONOTie
Plug FormatType BType BTie
Connectivity2.4 GHz Wifi, Bluetooth2.4 GHz Wifi, BluetoothTie
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home Assistant, IFTTTGoogle Home, Alexa, Samsung SmartThings, Home Assistant, IFTTTTie
On/Off ButtonYESYESTie
Zibgee RouterNONOTie

Frequently Asked Questions (FAQ)

Which is better overall: Sonoff Wifi Smart Plug S40 or Sonoff Wifi Smart Plug S40 Lite?
Sonoff Wifi Smart Plug S40 has the stronger overall profile in this comparison, especially for rating, maximum load power, and overheat/overload protection.
What is the biggest difference between Sonoff Wifi Smart Plug S40 and Sonoff Wifi Smart Plug S40 Lite?
Price is one of the clearest differences: Sonoff Wifi Smart Plug S40 lists $18.99, while Sonoff Wifi Smart Plug S40 Lite lists $11.99.
Which one looks better on price?
Sonoff Wifi Smart Plug S40 is listed at $18.99, while Sonoff Wifi Smart Plug S40 Lite is listed at $11.99. Sonoff Wifi Smart Plug S40 Lite (better spec).
Who should buy Sonoff Wifi Smart Plug S40?
Choose Sonoff Wifi Smart Plug S40 if your priority is rating and maximum load power and that matters more than price.
Who should buy Sonoff Wifi Smart Plug S40 Lite?
Choose Sonoff Wifi Smart Plug S40 Lite if your priority is price and that matters more than rating.
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