Shelly 1PM Mini Gen4

Buy the combination of size and flexibility

Shelly 1PM Mini Gen4 puts a meter and a single switched output into a 29 × 34 × 16 mm body. Its appeal is adding consumption readings and smart control inside a crowded wall box, with Matter included and Zigbee available as an alternative mode.

The single was in stock at €21.90 in Shelly's EU shop on September 9, 2026, including VAT with shipping extra. It costs €2 more than the non-metering Mini Gen4. For an ordinary mains circuit, that small difference can make the meter worthwhile, provided the powered output fits the job.

The harder comparison is 1PM Mini Gen3 at €14.90. It has the same dimensions and load limit and supports Matter after a firmware update. Gen4's €7 premium is a purchase of protocol flexibility, not a smaller relay or higher-capacity switch.

Consumption readings make it more informative

The native meter reports the connected AC load's power and energy use. That is useful for seeing whether equipment is drawing power or understanding the consumption of a controlled circuit. Local browser controls, timers and schedules let you act on that information without requiring Shelly Cloud for local operation.

Overpower, overcurrent, overvoltage and overtemperature protection are included. They remain device features within a correctly designed installation, rather than permission to attach a load above the relay's rating. Energy readings also do not guarantee savings: their value depends on whether they inform a useful change in how the load runs.

Detailed meter views and settings belong to the interface you use. Matter support does not establish that every platform will display the same energy history or protection controls.

The Mini has the same physical limits as before

It needs mains AC power and a neutral, with an 8 A AC output limit. There is no dry-contact output, DC operating mode or dimming. The module's small footprint can help with fit, but the wiring still needs space and a qualified electrician must carry out mains installation under the manual's instructions.

At the same €21.90 price, the full-size 1PM Gen4 gives a higher 16 A AC ceiling in a 37 × 42 × 16 mm body. Choose the Mini when the smaller footprint is useful, not because the word Mini suggests a cheaper way to control a large appliance.

A radio choice with consequences

Matter over Wi-Fi and Zigbee use alternative firmware modes. The relay cannot bridge other Zigbee devices into Matter, and its native Bluetooth sensor components are unavailable in Zigbee mode. That matters if a routine depends on Shelly BLU sensors. Scripting and MQTT offer additional options in the Wi-Fi role, but they do not imply every native feature follows the relay between protocols.

For a new compact installation that may use Zigbee, Mini Gen4 is a reasonable choice. For basic Matter switching and metering, buy the less expensive 1PM Mini Gen3, or keep an existing one. Gen4's unchanged size and output limit do not supply an upgrade case on their own.