Full Smart Relays comparison in 2026
Also sold in packs
Also sold in packs
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| Feature | Shelly 1 Gen4 | Shelly PM Mini Gen3 | Winner |
|---|---|---|---|
| Price | $24.99 | $14.49 | Shelly PM Mini Gen3 |
| Rating | 4.4 | 4.6 | Shelly PM Mini Gen3 |
| Safety | Overheating protection | None | Shelly 1 Gen4 |
| Connectivity | 2.4 GHz WiFi, Bluetooth, Zigbee | 2.4 GHz WiFi, Bluetooth | Shelly 1 Gen4 |
| Integrations | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | Google Home, Alexa, Samsung SmartThings, Home Assistant | Shelly 1 Gen4 |
| Energy Monitoring | NO | YES | Shelly PM Mini Gen3 |
| Dry Contact Mode | YES | NO | Shelly 1 Gen4 |
| Wet Contact Mode | YES | NO | Shelly 1 Gen4 |
| Zigbee Router | YES | NO | Shelly 1 Gen4 |
| Warranty | 3 years | 3 years | Tie |
The Shelly 1 Gen4 is a relay that turns a circuit on and off. The Shelly PM Mini Gen3 has no relay at all: it sits on a circuit and reports its power, voltage, current and total consumption. Buying one for the other's job is the most common mistake with this pair.
The Shelly 1 Gen4 supports Matter and Apple Home. The Shelly PM Mini Gen3 supports neither, and reaches Alexa, Google Home, SmartThings and Home Assistant instead.
The Shelly 1 Gen4 can join a Zigbee network through a hub and route for other devices. The Shelly PM Mini Gen3 is Wi-Fi and Bluetooth only.
The Shelly PM Mini Gen3 is the smaller module at 29 x 34 x 16 mm and 13 g, against 37 x 42 x 16 mm for the Shelly 1 Gen4, which makes the meter easy to hide in a box that already holds a switch.
The Shelly 1 Gen4 is a 16A relay; the Shelly PM Mini Gen3 cannot switch anything.
The Shelly PM Mini Gen3 is a dedicated meter that owners describe as precise, and it costs less.
The Shelly 1 Gen4 offers dry and wet contact modes, which a meter does not have.
Only the Shelly 1 Gen4 supports Matter and Apple Home.
Owners of both Shelly modules praise how quickly they join Home Assistant, but they bought them for different reasons. Shelly 1 Gen4 owners use it to control things: momentary garage door triggers, pool heater relays, low-voltage lights and detached mode that turns a dumb switch into a scene controller, with schedules that keep running after an outage; they warn about the neutral it needs, a tight fit and fiddly Zigbee pairing. Shelly PM Mini Gen3 owners use it to watch things: washing machines, dryers and caravan hookups, with praise for precise readings and a Bluetooth gateway role for Shelly BLU sensors. Their complaints are that it is easy to mistake for a switch, terminals suited to lighter cables and Shelly naming that led some to order the wrong model.
The Shelly 1 Gen4 if you want to control a circuit, since it is a 16A relay with Zigbee and Matter. The Shelly PM Mini Gen3 is only better when all you need is energy readings on a circuit that already has a working switch.
No. The Shelly PM Mini Gen3 is a power meter with no relay: it measures power, voltage, current and consumption but does not switch the load. The Shelly 1 Gen4 switches but does not document energy monitoring.
No, they do different jobs. The Shelly 1 Gen4 is a full-size Gen4 relay; the Shelly PM Mini Gen3 is a smaller Gen3 energy meter. A small Shelly that switches is a different product from either.
Yes, both integrate with Home Assistant, Alexa, Google Home and SmartThings. Only the Shelly 1 Gen4 adds Matter and Apple Home.
DIYers who want to control a light, pump, heater or garage door from a compact relay, with Wi-Fi, Zigbee or Matter to choose from.
Home Assistant users building energy dashboards and anyone who wants to see what one appliance or circuit consumes without changing how it is switched.
Our store on AmazonShop our ideas on AmazonLists of the smart home setups we would put together ourselves, ready to add to your Amazon cart.Shop on AmazonYou are looking at two of them. The full table lines up all Relays in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
