Shelly Plug S MTR Gen3

Discontinued, with a successor at about the same price

Shelly now marks both the black and white Plug S MTR Gen3 as discontinued, says the plug is no longer produced or sold by Shelly Group, and names Plug M Gen3 as its recommended successor. Leftover S stock is still easy to find in Germany, where the cheapest in-stock listings sit at about €14, a little above the M in Shelly's own shop; some sellers still ask about the old €24 list price. The M has the same direct Matter-over-Wi-Fi connection, switching, power metering and multicolor LED indication, and Shelly's two- and four-packs bring its per-plug price lower still.

That makes the M the default for a new purchase. The S's real argument was always its size: 44 × 44 × 70 mm against the M's 46 × 46 × 85 mm. Both fit Schuko and French-style Type E sockets, and the M carries the higher rating, 13 A/3000 W against 12 A/2500 W. A leftover S makes sense only at about the M's price, and only where those extra 15 mm of depth would collide with furniture or a cabinet door. Near the old list price, a discontinued plug with the lower rating is poor value.

Still a pleasant plug to own

The most appealing part of Plug S Gen3 is its small round body and transparent light ring. It sits unobtrusively beside a lamp or desk, and the ring can show power consumption through changing colors, use a color you choose, or stay off. Being able to reduce its brightness at night makes that decoration easier to live with.

Shelly also gives it more independence than a simple cloud-controlled switch. Its built-in browser interface handles local control and settings, stored schedules run the everyday routine, and a physical button switches the appliance without a phone. Shelly Cloud is optional for local use. Detailed power readings and settings are in Shelly's app and web interface; the light ring only gives a quick color cue.

Onboard scripting works only with Matter disabled, so you cannot run custom scripts on the plug and keep its Matter connection at the same time. Plug M Gen3 has the same restriction, so it does not separate the two Shelly plugs.

The 12 A/2500 W resistive-load limit is lower than many full-size European sockets allow, and the manual excludes directly attached plug-in transformers and chargers. Treat it as an indoor adapter for lamps and modest appliances.

The alternative outside Shelly

Tapo P110M is the closest substitute in this catalogue for a Schuko socket. It also meters, connects over Wi-Fi without a hub and carries a 16 A rating. Its updated EU firmware sends power and energy readings over Matter to Home Assistant and SmartThings; Shelly lists metering on its Gen3 plugs as working with the Shelly app, so the Tapo is the safer pick when you want those readings through Matter. Home Assistant also has a local Shelly integration, which keeps the M a sensible choice there, along with its browser interface and schedules.

Keep the one you own

Discontinuation does not change what an installed S Gen3 does today: it still switches over Matter, runs its schedules and reports consumption in Shelly. Shelly's discontinued notice does not say how long firmware updates will continue. There is no reason to replace a working plug with the M unless the load needs the M's higher rating.