Shelly 2PM Gen4 vs PM Mini Gen3 (2026): Which to Buy?

Updated September 2026

Data from Amazon and official Shelly site.

2026 verdict

The Shelly 2PM Gen4 wins this smart relay comparison comfortably, because it is a full dual-channel switching relay while the PM Mini is a monitor only.

Winner

Shelly 2PM Gen4

$38.99

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Beyond controlling two 16A circuits, it brings Wi-Fi, Bluetooth, Zigbee and Matter with a Zigbee router role, a complete four-way safety suite (overheating, overvoltage, overcurrent, overpower), interlock/cover mode for roller shutters, per-channel energy monitoring and support for Alexa, Google Home, Apple HomeKit, SmartThings and Home Assistant. The Shelly PM Mini Gen3 is the cheaper unit and an accurate energy monitor, but it cannot switch a circuit and lacks Matter. Choose the 2PM Gen4 when you want to control (and meter) two circuits or automate shutters; pick the PM Mini Gen3 only for standalone monitoring on a budget.

Winner

Shelly

Shelly 2PM Gen4

$38.99

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Shelly

Shelly PM Mini Gen3

$14.49

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Feature	Shelly 2PM Gen4	Shelly PM Mini Gen3	Winner
Price	$38.99	$14.49	Shelly PM Mini Gen3
Safety	Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection	None	Shelly 2PM Gen4
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Samsung SmartThings, Home Assistant	Shelly 2PM Gen4
Zibgee Router	YES	NO	Shelly 2PM Gen4
Rating	4.6	4.6	Tie
Warranty	3 years	3 years	Tie
Connectivity	Bluetooth, Zigbee	2.4 GHz WiFi, Bluetooth	Tie
Energy Monitoring	YES	YES	Tie
Power Off Memory	NO	NO	Tie
Dry Contact Mode	NO	NO	Tie
Wet Contact Mode	NO	NO	Tie

Winner

Shelly

Shelly 2PM Gen4

$38.99

Buy on Amazon USACheck price

+ Safety: Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
+ Zibgee Router: YES
- Price: $38.99 vs $14.49

Shelly

Shelly PM Mini Gen3

$14.49

Buy on Amazon USACheck price

+ Price: $14.49
- Safety: None vs Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection
- Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

Frequently Asked Questions

Which should I buy, the Shelly 2PM Gen4 or the 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.

What is the key difference between these two?

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.

Which one can automate roller shutters?

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.

Who should buy the Shelly 2PM Gen4?

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.

Who should buy the Shelly PM Mini Gen3?

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.

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