Shelly 2PM Gen4 vs Shelly PM Mini Gen3

The Shelly 2PM Gen4 for almost any control task, since it switches two circuits, automates shutters and meters energy. The Shelly PM Mini Gen3 only measures a circuit, so choose it just for standalone monitoring at a lower price.

Switching versus measuring. The Shelly 2PM Gen4 controls two circuits and adds cover mode, a four-way safety suite and multi-protocol radios, while the Shelly PM Mini Gen3 is a monitoring-only device that reports consumption but cannot switch anything.

The Shelly 2PM Gen4. Its interlock/cover mode with obstacle detection drives roller shutters, blinds and gates from one module. The Shelly PM Mini Gen3 is an energy meter and cannot control a motor or any load at all.

Buy the Shelly 2PM Gen4 if you want to control two circuits or roller shutters, meter energy per channel, and use Zigbee, Matter or Apple HomeKit, with a full four-way safety suite and a 16A rating.

Buy the Shelly PM Mini Gen3 only if you want the cheapest way to monitor a single circuit's energy use and feed accurate readings into Home Assistant, with no need to switch that circuit on or off.