Shelly 1 Mini Gen3 vs Shelly 2PM Gen4 comparison

Updated July 2026

Data from Amazon and official Shelly site.

2026 verdict

Two very different relays here, and the Shelly 2PM Gen4 wins this smart relay comparison with the higher owner rating and a much deeper feature set: two 16A channels, per-channel energy monitoring, a full four-way safety suite (overheating, overvoltage, overcurrent, overpower), a Zigbee router role and interlock/cover mode for roller shutters. The Shelly 1 Mini Gen3 stays relevant as the cheaper, far smaller unit, and it explicitly confirms dry-contact and wet-contact modes for single-load triggers like garage doors and sprinklers. Both need a neutral wire. Pick the 2PM Gen4 for dual circuits, shutter automation, metering and heavier loads; keep the Mini Gen3 when you only need one light load switched cheaply in a tight box.

Feature	Shelly 1 Mini Gen3	Shelly 2PM Gen4	Winner
Price	$17.99	$38.99	Shelly 1 Mini Gen3
Rating	4.5	4.6	Shelly 2PM Gen4
Safety	Overheating protection	Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection	Shelly 2PM Gen4
Integrations	Google Home, Alexa, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Shelly 2PM Gen4
Relay Channels	1	2	Shelly 2PM Gen4
Energy Monitoring	NO	YES	Shelly 2PM Gen4
Dry Contact Mode	YES	NO	Shelly 1 Mini Gen3
Wet Contact Mode	YES	NO	Shelly 1 Mini Gen3
Zibgee Router	NO	YES	Shelly 2PM Gen4
Warranty	3 years	3 years	Tie
Connectivity	2.4 GHz WiFi, Bluetooth	Bluetooth, Zigbee	Tie
Power Off Memory	NO	NO	Tie

Shelly

Shelly 1 Mini Gen3

$17.99

Buy on Amazon USA

+ Price: $17.99
+ Dry Contact Mode: YES
+ Wet Contact Mode: YES
- Rating: 4.5 vs 4.6
- Safety: Overheating protection vs Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection

Winner

Shelly

Shelly 2PM Gen4

$38.99

Buy on Amazon USA

+ Rating: 4.6
+ Safety: Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- Price: $38.99 vs $17.99
- Dry Contact Mode: NO vs YES

Frequently Asked Questions

Which relay is better, the Shelly 1 Mini Gen3 or the Shelly 2PM Gen4?

The Shelly 2PM Gen4 is the stronger relay, with two 16A channels, energy monitoring, cover mode for shutters, a four-way safety suite and a higher owner rating. The Shelly 1 Mini Gen3 wins on price and compactness for single-circuit jobs.

What is the biggest difference between these two?

Channels and features. The 2PM Gen4 controls two circuits, meters energy per channel and drives roller shutters via cover mode, while the 1 Mini Gen3 is a single-channel Wi-Fi relay with dry and wet contacts. They target different scales of project entirely.

Which one can automate roller shutters?

The Shelly 2PM Gen4. Its interlock/cover mode with obstacle detection is built to raise and lower roller shutters, blinds and gates from one module. The Shelly 1 Mini Gen3 is a single-channel relay and is not designed for that dual-motor task.

Who should buy the Shelly 1 Mini Gen3?

Buy the Shelly 1 Mini Gen3 if you want the cheapest, smallest way to make one circuit smart over Wi-Fi, using its dry or wet contacts for a garage door, sprinkler or low-voltage load in a crowded box.

Who should buy the Shelly 2PM Gen4?

Buy the Shelly 2PM Gen4 if you need two channels, roller-shutter or blind automation, per-channel energy monitoring, or loads up to 16A, plus multi-protocol radios including Zigbee and Matter. It is the far more capable module.

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