Shelly 2PM Gen4 vs Shelly Plus 1PM comparison

Updated July 2026

Data from Amazon and official Shelly site.

2026 verdict

Price and contact flexibility swing this one to the Shelly Plus 1PM, which costs less and offers dry and wet contact modes the Shelly 2PM Gen4 does not, so it can isolate its relay for a gate controller, boiler input or doorbell circuit and switch low-voltage DC as well as 16A AC. The Shelly 2PM Gen4 is the more modern and more capable module in raw terms: two independent 16A channels instead of one, cover mode with obstacle detection, Zigbee routing alongside Wi-Fi and Bluetooth, and Matter and Apple HomeKit support that the Plus 1PM lacks. Both meter their circuits, both list the full overheating, overvoltage, overcurrent and overpower protection set, both require a neutral wire, both carry 3-year warranties and both run locally with Home Assistant. Buy the Shelly Plus 1PM for a cheaper metered channel with dry contacts, and the Shelly 2PM Gen4 when you need two channels, shutter control or Matter and Zigbee.

Feature	Shelly 2PM Gen4	Shelly Plus 1PM	Winner
Price	$38.99	$27.49	Shelly Plus 1PM
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Samsung SmartThings, Home Assistant	Shelly 2PM Gen4
Relay Channels	2	1	Shelly 2PM Gen4
Dry Contact Mode	NO	YES	Shelly Plus 1PM
Wet Contact Mode	NO	YES	Shelly Plus 1PM
Zibgee Router	YES	NO	Shelly 2PM Gen4
Rating	4.6	4.6	Tie
Warranty	3 years	3 years	Tie
Safety	Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection	Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection	Tie
Connectivity	Bluetooth, Zigbee	2.4 GHz WiFi, Bluetooth	Tie
Energy Monitoring	YES	YES	Tie
Power Off Memory	NO	NO	Tie

Shelly

Shelly 2PM Gen4

$38.99

Buy on Amazon USA

+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
+ Relay Channels: 2
+ Zibgee Router: YES
- Price: $38.99 vs $27.49
- Dry Contact Mode: NO vs YES

Winner

Shelly

Shelly Plus 1PM

$27.49

Buy on Amazon USA

+ Price: $27.49
+ Dry Contact Mode: YES
+ Wet Contact Mode: YES
- Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- Relay Channels: 1 vs 2

Frequently Asked Questions

Which is better overall: Shelly 2PM Gen4 or Shelly Plus 1PM?

The Shelly Plus 1PM takes the overall win on price and wiring flexibility, since it is cheaper and offers dry and wet contact modes plus DC switching. The Shelly 2PM Gen4 is the more capable module, with two channels, cover mode, Zigbee routing and Matter and HomeKit support.

What is the biggest difference between the Shelly 2PM Gen4 and the Shelly Plus 1PM?

Channel count and contacts. The Shelly 2PM Gen4 has two 16A channels that can interlock for a shutter motor and can run on Zigbee or Wi-Fi with Matter. The Shelly Plus 1PM has a single channel but supports dry contact isolation and 30V DC loads, which the 2PM Gen4 does not.

Do both have full electrical protection?

Yes. Both the Shelly 2PM Gen4 and the Shelly Plus 1PM list overheating, overvoltage, overcurrent and overpower protection, and both meter power, voltage and consumption. That makes either one a sensible choice for a heater, pump or appliance circuit, provided you have a neutral wire.

Which one works with Matter and Zigbee?

Only the Shelly 2PM Gen4. It supports Matter and Apple HomeKit and can join a Zigbee network as a device and a router, in addition to Wi-Fi and Bluetooth. The Shelly Plus 1PM is Wi-Fi only, with Alexa, Google Home, SmartThings and Home Assistant support but no Matter or HomeKit.

Who should buy the Shelly Plus 1PM?

Buy the Shelly Plus 1PM if you want to spend less on one protected, metered 16A channel and you need dry contact isolation or DC switching, for example on a boiler, gate or low-voltage circuit. It has a long reliability record and a 3-year warranty.

Who should buy the Shelly 2PM Gen4?

Buy the Shelly 2PM Gen4 if you need two independent metered channels, a roller shutter with obstacle detection, or the flexibility of running on Zigbee or Wi-Fi with Matter, Apple HomeKit and SmartThings support. It fits a standard back box and needs live and neutral.

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