Sonoff WiFi Smart Plug S40 vs WiFi Smart Plug S40 Lite

Updated September 2026

Data from Amazon and official Sonoff site.

2026 verdict

Sonoff WiFi Smart Plug S40 has the better all-around case than Sonoff WiFi Smart Plug S40 Lite in 2026, starting with price, maximum load power, and Overheat/Overload protection.

Winner

Sonoff WiFi Smart Plug S40

$10.90

Buy on Amazon USACheck price

Its biggest wins come from price, 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 its specific feature mix above everything else here. That is why Sonoff WiFi Smart Plug S40 wins the verdict here.

Winner

Sonoff

Sonoff WiFi Smart Plug S40

$10.90

Buy on Amazon USACheck price

Sonoff

Sonoff WiFi Smart Plug S40 Lite

$11.99

Buy on Amazon USACheck price

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Feature	Sonoff WiFi Smart Plug S40	Sonoff WiFi Smart Plug S40 Lite	Winner
Price	$10.90	$11.99	Sonoff WiFi Smart Plug S40
Maximum Load Power	1800W	1500W	Sonoff WiFi Smart Plug S40
Overheat/Overload Protection	YES	NO	Sonoff WiFi Smart Plug S40
Energy Monitoring	YES	NO	Sonoff WiFi Smart Plug S40
Rating	4.2	4.2	Tie
Warranty	1 year	1 year	Tie
Weather Resistance	NO	NO	Tie
Plug Format	Type B	Type B	Tie
Connectivity	2.4 GHz WiFi, Bluetooth	2.4 GHz WiFi, Bluetooth	Tie
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Tie
On/Off Button	YES	YES	Tie
Zibgee Router	NO	NO	Tie

Winner

Sonoff

Sonoff WiFi Smart Plug S40

$10.90

Buy on Amazon USACheck price

+ Price: $10.90
+ Maximum Load Power: 1800W
+ Overheat/Overload Protection: YES

Sonoff

Sonoff WiFi Smart Plug S40 Lite

$11.99

Buy on Amazon USACheck price

- Price: $11.99 vs $10.90
- Maximum Load Power: 1500W vs 1800W

Frequently Asked Questions

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 price, 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 $10.90, while Sonoff WiFi Smart Plug S40 Lite lists $11.99.

Which one looks better on price?

Sonoff WiFi Smart Plug S40 is listed at $10.90, while Sonoff WiFi Smart Plug S40 Lite is listed at $11.99. Sonoff WiFi Smart Plug S40 (better spec).

Who should buy Sonoff WiFi Smart Plug S40?

Choose Sonoff WiFi Smart Plug S40 if your priority is price and maximum load power and that matters more than the competing advantages.

Who should buy Sonoff WiFi Smart Plug S40 Lite?

Choose Sonoff WiFi Smart Plug S40 Lite if your priority is its specific strengths and that matters more than price.

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