Shelly 1 Gen3 vs Shelly Plus 1PM comparison

Updated August 2026

Data from Amazon and official Shelly site.

2026 verdict

Energy data and full electrical protection put the Shelly Plus 1PM ahead of the Shelly 1 Gen3 in this relay matchup. The Plus 1PM measures power, voltage, current and total consumption on its single 16A channel, and it lists overheating, overvoltage, overcurrent and overpower protection where the Shelly 1 Gen3 documents none, all backed by a 3-year warranty and better owner reviews. The Shelly 1 Gen3 counters on price and platform reach: it supports Matter and Apple HomeKit, which the Plus 1PM does not, and it works without a neutral wire and from 12-48V DC as well as mains AC, which opens up installs the Plus 1PM cannot do. Both offer dry and wet contact modes, both are 2.4GHz Wi-Fi with Bluetooth, both run locally with Home Assistant, and neither supports Zigbee, Z-Wave or Thread. Pick the Shelly Plus 1PM when you want metering and protection, and the Shelly 1 Gen3 when there is no neutral or you need Matter and HomeKit.

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Feature	Shelly 1 Gen3	Shelly Plus 1PM	Winner
Price	$22.99	$27.49	Shelly 1 Gen3
Rating	4.5	4.6	Shelly Plus 1PM
Safety	Overheating protection	Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection	Shelly Plus 1PM
Connectivity	Bluetooth	2.4 GHz WiFi, Bluetooth	Shelly Plus 1PM
Integrations	Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter	Google Home, Alexa, Samsung SmartThings, Home Assistant	Shelly 1 Gen3
Energy Monitoring	NO	YES	Shelly Plus 1PM
Relay Channels	1	1	Tie
Power Off Memory	NO	NO	Tie
Dry Contact Mode	YES	YES	Tie
Wet Contact Mode	YES	YES	Tie
Zibgee Router	NO	NO	Tie

Shelly

Shelly 1 Gen3

$22.99

Buy on Amazon USA

+ Price: $22.99
+ Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- Rating: 4.5 vs 4.6
- Safety: Overheating protection vs Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection

Winner

Shelly

Shelly Plus 1PM

$27.49

Buy on Amazon USA

+ Rating: 4.6
+ Safety: Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection
+ Connectivity: 2.4 GHz WiFi, Bluetooth
- Price: $27.49 vs $22.99
- 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 Gen3 or Shelly Plus 1PM?

The Shelly Plus 1PM wins overall. It adds energy monitoring, a complete set of overheating, overvoltage, overcurrent and overpower protections and a 3-year warranty, and it is better rated by owners. The Shelly 1 Gen3 is cheaper and supports Matter and Apple HomeKit, which the Plus 1PM lacks.

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

Metering. The Shelly Plus 1PM reports instantaneous power, voltage, current and accumulated consumption for whatever it switches, which is why people use it on water heaters, pumps and appliances. The Shelly 1 Gen3 has no energy monitoring at all, and instead trades that for a no-neutral install and Matter support.

Which one is easier to install?

The Shelly 1 Gen3, because it does not require a neutral wire and can be powered from 110-240V AC or 12-48V DC. The Shelly Plus 1PM needs both live and neutral at the install point, which rules it out in some older switch boxes and light fittings.

Do both work with Apple HomeKit?

No. Only the Shelly 1 Gen3 supports Apple HomeKit, and it also supports Matter. The Shelly Plus 1PM works with Alexa, Google Home, SmartThings and Home Assistant but has no HomeKit or Matter support, so an Apple-centred home is a strong reason to choose the Gen3.

Who should buy the Shelly Plus 1PM?

Buy the Shelly Plus 1PM if you want to switch a 16A circuit and know exactly what it consumes, with overheating, overvoltage, overcurrent and overpower protection behind it and a 3-year warranty. It suits boilers, heaters and appliances, and runs fully locally with Home Assistant.

Who should buy the Shelly 1 Gen3?

Buy the Shelly 1 Gen3 if your box has no neutral, if you need to power the module from 12-48V DC, or if Matter and Apple HomeKit support matter to you. It is the cheaper module, supports dry and wet contacts, and can run on-device scripts for advanced automations.

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