Shelly Plus 1 vs Shelly PM Mini Gen3

The Shelly Plus 1 wins overall because it can switch a circuit, with a 16A relay, dry and wet contact modes, DC support, overheating protection and SmartThings integration. The Shelly PM Mini Gen3 is cheaper and adds precise energy monitoring, but it has no relay of any kind.

Control versus measurement. The Shelly Plus 1 switches a load but reports nothing about it. The Shelly PM Mini Gen3 measures power, voltage, current and consumption but cannot switch the circuit at all. If you want both in one module, the Shelly Plus 1PM combines them.

No. It is a measurement-only module, designed to sit on a circuit and report exactly what it draws, which is useful on appliances that are not otherwise smart. Any switching has to come from a relay module such as the Shelly Plus 1 or a PM model.

Yes. The Shelly Plus 1 and the Shelly PM Mini Gen3 both need a neutral at the install point. Both are also 2.4GHz Wi-Fi only with Bluetooth, work with Alexa, Google Home and Home Assistant, and carry 3-year warranties.

Buy the Shelly Plus 1 if you need to make an existing circuit smart, especially where a dry contact is required, such as a gate, boiler or garage controller. It handles 16A AC or 10A DC, is UL listed with overheating protection, and runs locally with no cloud account.

Buy the Shelly PM Mini Gen3 if you want to find out what a circuit or appliance actually consumes without changing how it is switched. It is tiny, precise, quick to integrate with Home Assistant, doubles as a Shelly BLU gateway and comes with a 3-year warranty.