Shelly Plus 1 vs Shelly Plus 1PM comparison

Updated June 2026

Data from Amazon and official Shelly site.

2026 verdict

Same module, one useful addition: the Shelly Plus 1PM wins over the Shelly Plus 1 by adding energy monitoring and a full protection set while actually costing less. It reports power, voltage, current and total consumption on its 16A channel and guards against overheating, overvoltage, overcurrent and overpower, where the Plus 1 lists overheating protection alone and offers no metering at all. Everything else is shared: the same 37 x 42 x 16 mm body, the same single relay channel, the same 16A AC and 10A DC ratings, dry and wet contact modes, power-off memory, a neutral requirement, 2.4GHz Wi-Fi with Bluetooth pairing, local operation with Home Assistant and 3-year warranties. Neither supports Zigbee, Z-Wave, Thread, Matter or Apple HomeKit. There is no scenario where the Plus 1 is the better technical choice, so buy the Shelly Plus 1PM unless the Shelly Plus 1 happens to be cheaper where you shop and you truly do not want consumption data.

Feature	Shelly Plus 1	Shelly Plus 1PM	Winner
Price	$42.00	$27.49	Shelly Plus 1PM
Safety	Overheating protection	Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection	Shelly Plus 1PM
Energy Monitoring	NO	YES	Shelly Plus 1PM
Rating	4.6	4.6	Tie
Warranty	3 years	3 years	Tie
Connectivity	2.4 GHz WiFi, Bluetooth	2.4 GHz WiFi, Bluetooth	Tie
Integrations	Google Home, Alexa, Samsung SmartThings, Home Assistant	Google Home, Alexa, Samsung SmartThings, Home Assistant	Tie
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 Plus 1

$42.00

Buy on Amazon USA

- Price: $42.00 vs $27.49
- Safety: Overheating protection vs Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection

Winner

Shelly

Shelly Plus 1PM

$27.49

Buy on Amazon USA

+ Price: $27.49
+ Safety: Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection
+ Energy Monitoring: YES

Frequently Asked Questions

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

The Shelly Plus 1PM wins clearly. It adds energy monitoring and a complete overheating, overvoltage, overcurrent and overpower protection set to an otherwise identical module, and it is the cheaper of the two. The Shelly Plus 1 offers no advantage beyond availability.

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

The PM, which stands for power metering. The Shelly Plus 1PM measures instantaneous power, voltage, current and accumulated consumption on the circuit it switches. The Shelly Plus 1 has no metering hardware, and also lists only overheating protection rather than the full protection set.

Are the two modules the same size and rating?

Yes. Both are 37 x 42 x 16 mm and weigh about 26 to 27g, both switch up to 16A on AC and 10A on 30V DC, both offer dry and wet contact modes, both need a neutral wire and both restore their state after a power cut.

Do either of them support Matter or Apple HomeKit?

No. Neither the Shelly Plus 1 nor the Shelly Plus 1PM supports Matter, Apple HomeKit, Zigbee, Z-Wave or Thread. Both work with Alexa, Google Home, SmartThings and Home Assistant over 2.4GHz Wi-Fi, and both can run entirely locally with no cloud account.

Who should buy the Shelly Plus 1PM?

Buy the Shelly Plus 1PM for almost any single-channel job: it switches 16A AC or 10A DC, isolates with dry contacts when needed, tells you what the load consumes, and protects against overheating, overvoltage, overcurrent and overpower, with a 3-year warranty.

Who should buy the Shelly Plus 1?

Buy the Shelly Plus 1 only if you find it cheaper than the 1PM and have no interest in consumption data. It is the same UL-listed hardware minus metering, with dry contact isolation, AC and DC support and a 3-year warranty, and it still requires a neutral wire.

More Relays