Shelly 1 Gen4 vs PM Mini Gen3 (2026): Which to Buy?

Updated September 2026

Data from Amazon and official Shelly site.

2026 verdict

Winner

$24.99

The Shelly 1 Gen4 wins this smart relay comparison because it does the core job the other cannot: it switches and automates a circuit, and it connects far more widely, adding Zigbee, Matter and Apple HomeKit with a Zigbee router role plus safety protections and dry and wet contact modes. The Shelly PM Mini Gen3 is a different class of device, a compact energy monitor that measures power, voltage and consumption but does not turn anything on or off, and its appeal is the lower price and higher owner rating for that narrow measurement role. Both are Shelly modules that run locally and plug straight into Home Assistant. Choose the Shelly 1 Gen4 if you need remote control, automations and multi-protocol connectivity; choose the Shelly PM Mini Gen3 only when your goal is to monitor a circuit's energy use, not switch it.

Winner

Shelly

Shelly 1 Gen4

$24.99

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Shelly

Shelly PM Mini Gen3

$14.49

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Feature	Shelly 1 Gen4	Shelly PM Mini Gen3	Winner
Price	$24.99	$14.49	Shelly PM Mini Gen3
Rating	4.4	4.6	Shelly PM Mini Gen3
Safety	Overheating protection	None	Shelly 1 Gen4
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Samsung SmartThings, Home Assistant	Shelly 1 Gen4
Energy Monitoring	NO	YES	Shelly PM Mini Gen3
Dry Contact Mode	YES	NO	Shelly 1 Gen4
Wet Contact Mode	YES	NO	Shelly 1 Gen4
Zibgee Router	YES	NO	Shelly 1 Gen4
Warranty	3 years	3 years	Tie
Connectivity	Bluetooth, Zigbee	2.4 GHz WiFi, Bluetooth	Tie
Power Off Memory	NO	NO	Tie

Winner

Shelly

Shelly 1 Gen4

$24.99

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+ Safety: Overheating protection
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
+ Dry Contact Mode: YES
- Price: $24.99 vs $14.49
- Rating: 4.4 vs 4.6

Shelly

Shelly PM Mini Gen3

$14.49

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+ Price: $14.49
+ Rating: 4.6
+ Energy Monitoring: YES
- Safety: None vs Overheating protection
- Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter

Frequently Asked Questions

Which is better overall: Shelly 1 Gen4 or Shelly PM Mini Gen3?

The Shelly 1 Gen4 is better overall for most buyers because it is a full smart relay that switches circuits and adds Zigbee, Matter and HomeKit. The Shelly PM Mini Gen3 is a measurement-only power meter, so it wins only when you just want to monitor energy and never control the load.

What is the biggest difference between the Shelly 1 Gen4 and the Shelly PM Mini Gen3?

Switching versus measuring. The Shelly 1 Gen4 controls and automates a circuit and speaks Wi-Fi, Bluetooth, Zigbee and Matter, while the Shelly PM Mini Gen3 only measures power, voltage and consumption and cannot switch a load.

Can the Shelly PM Mini Gen3 control devices like the Shelly 1 Gen4?

No. The Shelly PM Mini Gen3 is a power meter, not a switch, so it cannot turn a load on or off. The Shelly 1 Gen4 is a relay with dry and wet contacts that switches and automates its circuit.

Which one supports more smart home protocols?

The Shelly 1 Gen4 by a wide margin. It adds Zigbee, Matter and Apple HomeKit along with Alexa, Google Home, SmartThings and Home Assistant, whereas the Shelly PM Mini Gen3 is used mainly to push energy data into Home Assistant dashboards.

Who should buy the Shelly 1 Gen4?

Buy the Shelly 1 Gen4 if you want to switch and automate a circuit with multi-protocol connectivity (Wi-Fi, Zigbee, Matter, HomeKit) and dry-contact flexibility for garage doors, pumps and low-voltage projects.

Who should buy the Shelly PM Mini Gen3?

Buy the Shelly PM Mini Gen3 only if you want to measure an appliance or circuit's energy use, such as a washing machine or caravan hookup, and have no need to switch it on or off.

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