Plugs · Head to head

Shelly Plug M Gen3 vs Sonoff Zigbee Smart Plug S40 Lite

Full Smart Plugs comparison in 2026

Updated October 2026
Data from Amazon and official Shelly and Sonoff sites.
2026 verdict
Start with energy monitoring versus none, 3000W versus 1800W of load.
Shelly Plug M Gen3
Winner
Shelly Plug M Gen3
€12.90

Last recorded price

Buy on Amazon Germany
The Shelly Plug M Gen3 is then the smart plug that wins on a 3000W load rating. Those wins sit alongside a 3000W load rating, built-in energy monitoring, and a 3-year warranty. Shelly Plug M Gen3 is a Type F body and Sonoff Zigbee Smart Plug S40 Lite is Type B, so they are not drop-in replacements in the same outlet standard. Sonoff Zigbee Smart Plug S40 Lite keeps Zigbee router duty and the more affordable option, so it remains the pick when that priority beats a 3000W load rating. If a 3000W load rating is on the list, the Shelly Plug M Gen3 is the smart plug to buy; otherwise the Sonoff Zigbee Smart Plug S40 Lite is the honest alternative.
Winner
Shelly Plug M Gen3
Shelly

Shelly Plug M Gen3

Prime exclusive deal
€12.90

Last recorded price

Buy on Amazon Germany

Also sold in packs

  • Pack of 2€19.90€9.95 per unitYou save €5.90Buy
  • Pack of 4€37.90€9.47 per unitYou save €13.70Buy
  • Pack of 8€80.90€10.11 per unitYou save €22.30Buy
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FeatureShelly Plug M Gen3Sonoff Zigbee Smart Plug S40 LiteWinner
Price€12.90$12.99Shelly Plug M Gen3
Rating4.54.4Shelly Plug M Gen3
Warranty3 years1 yearShelly Plug M Gen3
Maximum Load Power3000W1800WShelly Plug M Gen3
Overheat/Overload ProtectionYESNOShelly Plug M Gen3
Energy MonitoringYESNOShelly Plug M Gen3
Connectivity2.4 GHz WiFi, BluetoothZigbeeShelly Plug M Gen3
Zigbee RouterNOYESSonoff Zigbee Smart Plug S40 Lite
Plug FormatType FType BDifferent strengths
Weather ResistanceNONOTie
IntegrationsGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterTie
On/Off ButtonYESYESTie

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Shelly Plug M Gen3
  • Sonoff Zigbee Smart Plug S40 Lite

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Frequently Asked Questions

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

The Shelly Plug M Gen3 is better overall as a smart plug. It wins on a 3000W load rating, built-in energy monitoring, and a 3-year warranty. The Sonoff Zigbee Smart Plug S40 Lite is the alternative when you want Zigbee router duty and the more affordable option.

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

Energy monitoring. Shelly Plug M Gen3 measures power at the outlet, and Sonoff Zigbee Smart Plug S40 Lite does not.

Does the Shelly Plug M Gen3 or the Sonoff Zigbee Smart Plug S40 Lite need a hub?

Sonoff Zigbee Smart Plug S40 Lite needs a Zigbee hub to join the network. Shelly Plug M Gen3 talks over Wi-Fi (and Matter where listed) without that extra box.

Does the Shelly Plug M Gen3 or the Sonoff Zigbee Smart Plug S40 Lite support Matter?

Yes on the Shelly Plug M Gen3, not on the Sonoff Zigbee Smart Plug S40 Lite. Matter is how the Shelly Plug M Gen3 joins Apple Home, Alexa and Google Home without a brand hub.

Who should buy the Shelly Plug M Gen3?

Buy the Shelly Plug M Gen3 if a 3000W load rating is the priority, along with built-in energy monitoring and a 3-year warranty. Choose the Sonoff Zigbee Smart Plug S40 Lite instead when Zigbee router duty matters more than those extras.

Who should buy the Sonoff Zigbee Smart Plug S40 Lite?

Buy the Sonoff Zigbee Smart Plug S40 Lite if Zigbee router duty is the priority, along with the more affordable option. Choose the Shelly Plug M Gen3 instead when a 3000W load rating matters more than those extras.

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