Shelly Plug M Gen3 vs Sonoff Zigbee Smart Plug S40 Lite

Updated September 2026

Data from Amazon and official Shelly and Sonoff sites.

2026 verdict

Shelly Plug M Gen3 beats Sonoff Zigbee Smart Plug S40 Lite in 2026, with its clearest edge on warranty, maximum load power, and Overheat/Overload protection.

Winner

Shelly Plug M Gen3

$14.99

Buy on Official Store

It has the clearer edge on warranty, maximum load power, and Overheat/Overload protection, and it stays ahead on energy monitoring and connectivity. Sonoff Zigbee Smart Plug S40 Lite can still be the right pick, but only if price and zibgee router outweigh the wider strengths of Shelly Plug M Gen3. That is why the final call still favors Shelly Plug M Gen3.

Winner

Shelly

Shelly Plug M Gen3

$14.99

Buy on Official Store

Sonoff

Sonoff Zigbee Smart Plug S40 Lite

$12.99

Buy on Amazon USA

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Feature	Shelly Plug M Gen3	Sonoff Zigbee Smart Plug S40 Lite	Winner
Price	$14.99	$12.99	Sonoff Zigbee Smart Plug S40 Lite
Warranty	3 years	1 year	Shelly Plug M Gen3
Maximum Load Power	3000W	1800W	Shelly Plug M Gen3
Overheat/Overload Protection	YES	NO	Shelly Plug M Gen3
Energy Monitoring	YES	NO	Shelly Plug M Gen3
Connectivity	2.4 GHz WiFi, Bluetooth	Zigbee	Shelly Plug M Gen3
Zibgee Router	NO	YES	Sonoff Zigbee Smart Plug S40 Lite
Plug Format	Type F	Type B	Different strengths
Rating	4.5	4.5	Tie
Weather Resistance	NO	NO	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

Winner

Shelly

Shelly Plug M Gen3

$14.99

Buy on Official Store

+ Warranty: 3 years
+ Maximum Load Power: 3000W
+ Overheat/Overload Protection: YES
- Price: $14.99 vs $12.99
- Zibgee Router: NO vs YES

Sonoff

Sonoff Zigbee Smart Plug S40 Lite

$12.99

Buy on Amazon USA

+ Price: $12.99
+ Zibgee Router: YES
- Warranty: 1 year vs 3 years
- Maximum Load Power: 1800W vs 3000W

Frequently Asked Questions

Which is better overall: Shelly Plug M Gen3 or Sonoff Zigbee Smart Plug S40 Lite?

Shelly Plug M Gen3 has the stronger overall profile in this comparison, especially for warranty, maximum load power, and Overheat/Overload protection.

What is the biggest difference between Shelly Plug M Gen3 and Sonoff Zigbee Smart Plug S40 Lite?

Price is one of the clearest differences: Shelly Plug M Gen3 lists $14.99, while Sonoff Zigbee Smart Plug S40 Lite lists $12.99.

Which one looks better on price?

Shelly Plug M Gen3 is listed at $14.99, while Sonoff Zigbee Smart Plug S40 Lite is listed at $12.99. Sonoff Zigbee Smart Plug S40 Lite (better spec).

Who should buy Shelly Plug M Gen3?

Choose Shelly Plug M Gen3 if your priority is warranty and maximum load power and that matters more than price.

Who should buy Sonoff Zigbee Smart Plug S40 Lite?

Choose Sonoff Zigbee Smart Plug S40 Lite if your priority is price and zibgee router and that matters more than warranty.

Full comparison table

Compare all 33 Plugs side by side

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