Shelly 1 Gen3 vs Shelly PM Mini Gen3

The Shelly PM Mini Gen3 on price, owner rating, Wi-Fi connectivity and energy monitoring. But it has no relay channel, so if you need to switch a load rather than measure it, the Shelly 1 Gen3 is the only option of the two.

No. It has no relay channel and works purely as an energy meter, reporting consumption on a circuit. Switching requires a relay such as the Shelly 1 Gen3.

The Shelly PM Mini Gen3, which is built for exactly that. The Shelly 1 Gen3 switches circuits but does not report consumption.

The Shelly 1 Gen3, which supports Apple HomeKit, Samsung SmartThings and Matter alongside Alexa, Google Home and Home Assistant. The Shelly PM Mini Gen3 covers Google Home, Alexa and Home Assistant.

They describe how the relay's output is wired: dry contact provides a voltage-free switch for low-voltage or pulse-triggered gear, wet contact passes mains through. Only the Shelly 1 Gen3 offers both here.

Anyone who needs to control a circuit: a light, a pump, a gate trigger. It also brings the widest platform support of the two, including HomeKit and Matter.

Anyone who only wants to know what a circuit is consuming, in a module small enough to tuck into a backbox, at a lower price and with a strong owner rating.