Updated September 2026
Data from Amazon and official Shelly site.
2026 verdict
Shelly Plus 2PM is the pick when a box holds two circuits or a motor, thanks to its two channels and per-channel energy monitoring.
It adds interlock mode for roller shutters, blinds and garage doors and lists overheating, overvoltage, overcurrent and overpower protection plus a 3-year warranty. The Shelly 1 Gen3 is the lower priced single-channel relay and answers with Matter and Apple Home support, which the Shelly Plus 2PM lacks, a 16A rating against 10A, full Bluetooth, and no neutral wire requirement. Both offer dry and wet contact modes, share the 37 x 42 x 16 mm body and work with Alexa, Google Home, SmartThings and Home Assistant. Buy the Shelly Plus 2PM for shutters or two lights with metering, and the Shelly 1 Gen3 for one circuit in a no-neutral box or an Apple Home setup.
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| Feature | Shelly 1 Gen3 | Shelly Plus 2PM | Winner |
|---|---|---|---|
| Price | $22.99 | €23.00 | Shelly 1 Gen3 |
| Connectivity | Bluetooth | 2.4 GHz WiFi, Bluetooth | Shelly Plus 2PM |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Samsung SmartThings, Home Assistant | Shelly 1 Gen3 |
| Relay Channels | 1 | 2 | Shelly Plus 2PM |
| Energy Monitoring | NO | YES | Shelly Plus 2PM |
| Rating | 4.6 | 4.6 | Tie |
| Safety | Overheating protection | Overheating protection, Overvoltage protection, Overcurrent protection, Overpower protection | Tie |
| Dry Contact Mode | YES | YES | Tie |
| Wet Contact Mode | YES | YES | Tie |
| Zibgee Router | NO | NO | Tie |
What the differences mean
One channel or two
The Shelly Plus 2PM switches two circuits and pairs them in interlock mode to drive a motor up and down, which is what covers need. The Shelly 1 Gen3 switches one circuit, so a shutter would take two of them and no interlock.
Energy monitoring
The Shelly Plus 2PM meters each channel. The Shelly 1 Gen3 has no energy monitoring, which its owners list as its main gap.
Neutral wire
The Shelly 1 Gen3 is listed as working without a neutral, while the Shelly Plus 2PM requires one. In an older box without a neutral, only the single relay installs.
Apple Home and load rating
The Shelly 1 Gen3 supports Matter and Apple Home and is rated 16A. The Shelly Plus 2PM supports neither and is rated 10A per channel, still plenty for lights and shutter motors.
Which one to buy if
- you are automating roller shutters or a garage door motor
The Shelly Plus 2PM's interlock mode drives both motor directions from one module.
- your switch box has no neutral
The Shelly 1 Gen3 is listed as not needing one; the Shelly Plus 2PM does.
- you use Apple Home
Only the Shelly 1 Gen3 supports Matter and appears in Apple Home.
- you want to see what each circuit consumes
The Shelly Plus 2PM meters both channels; the Shelly 1 Gen3 has no metering.
- + Price: $22.99
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Connectivity: Bluetooth vs 2.4 GHz WiFi, Bluetooth
- - Relay Channels: 1 vs 2
Winner
26% OFF
€23.00
€31.00
- + Connectivity: 2.4 GHz WiFi, Bluetooth
- + Relay Channels: 2
- + Energy Monitoring: YES
- - Price: €23.00 vs $22.99
- - Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
What owners say
Owners of both Shelly relays value running them locally through Home Assistant without depending on the cloud. Shelly Plus 2PM owners, often with several units installed over years, praise the cover mode that turns a plain switch into precise shutter and curtain control, and they complain about the neutral wire older boxes lack, units that run warm and no position feedback. Shelly 1 Gen3 owners describe it as a do-anything building block, wired into a ceiling box when the switch has no neutral, scripted on the device or flashed with ESPHome, and used for garage doors, pumps and irrigation; their complaints are no energy monitoring, a tight fit in small boxes and no push notifications.
Price history compared
Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.
- Shelly 1 Gen3
- Shelly Plus 2PM
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Frequently Asked Questions
Which is better overall: Shelly 1 Gen3 or Shelly Plus 2PM?
The Shelly Plus 2PM when you need two channels, cover control or energy readings. The Shelly 1 Gen3 is the better and cheaper choice for a single circuit, especially without a neutral or on Apple Home.
Shelly 1 vs Shelly 2: what is the difference between the Shelly 1 Gen3 and the Shelly Plus 2PM?
The Shelly 1 Gen3 is a single-channel relay with no metering; the Shelly Plus 2PM has two channels, per-channel energy monitoring and interlock mode for covers. The Shelly 1 Gen3 adds Matter and needs no neutral, while the Plus requires one.
Can the Shelly 1 Gen3 control roller shutters like the Shelly Plus 2PM?
Not on its own. A shutter motor needs separate up and down circuits kept apart by interlock, which is exactly what the two-channel Shelly Plus 2PM provides and the single-channel Shelly 1 Gen3 does not.
Do the Shelly 1 Gen3 and the Shelly Plus 2PM work with Apple Home?
The Shelly 1 Gen3 does, through Matter. The Shelly Plus 2PM supports neither Matter nor Apple HomeKit; both work with Alexa, Google Home, SmartThings and Home Assistant.
Who should buy the Shelly 1 Gen3?
DIYers with one circuit to automate, no-neutral switch boxes, Apple Home setups, or projects like garage door triggers, pumps and irrigation.
Who should buy the Shelly Plus 2PM?
Anyone automating shutters, blinds, curtains or two lights from one box who wants per-channel metering and full overload protection.
Full comparison table
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