Shelly
Shelly Pro 4PM
- Wi-Fi
- Bluetooth
Verified September 2026
The one to reach for once you outgrow back-box modules: 4 independently metered 16A channels (40A combined) on a DIN-rail unit built for the consumer unit, not behind a switch. That makes it the practical choice for a garage door, an immersion heater, or four zones of a boiler/valve setup on one device. It ships in its own black plastic enclosure — no separate housing to source — at roughly 96×53×59mm, eating about six standard 17.5mm DIN modules of rail space. Needs a neutral at each channel and isn't works-with-HA certified (only Shelly's Z-Wave Wave range carries that badge) — but the native local Shelly integration is rock-solid.
In Home Assistant
| Control | Type | What it does |
|---|---|---|
| Switch (per channel) | Switch | Four independently addressable relay channels, each 16A rated with its own on/off state — no factory pairing into cover outputs. |
| Power (per channel) | Sensor | Per-channel active power, voltage, current, and cumulative energy, updated in near-real time from the onboard metering on each channel. |
| Input (per channel) | Binary sensor | Four dry-contact input terminals, independent of the relay channels, usable for physical switches or external contacts feeding automations. |
| Device temperature | Sensor | Internal enclosure temperature, tied to the device's overheating-protection cutoff — useful for alerting before firmware force-trips a channel under sustained high load. |
| Firmware update | Update | Supports HA-triggered OTA without going through the Shelly cloud app. |
Unlike the compact Gen3 modules, the Pro 4PM ships with a built-in Ethernet port, and the native Shelly integration will happily bind to that wired IP instead of Wi-Fi — worth forcing explicitly on a consumer-unit install, since a steel enclosure is exactly the kind of Faraday cage that produces flaky signal and phantom disconnects on Wi-Fi-only devices. It exposes four independent switch components with per-channel voltage/current/power/energy, not a paired cover profile: unlike the 2PM, there's no factory cover mode to merge two channels into a roller output, so all four stay as separate switch entities needing HA-side or script-side interlocking if you want cover-like behaviour. It also carries onboard scripting, letting you push channel-grouping or safety-interlock logic onto the device itself as a local fallback if the HA automation engine or network link goes down.
Specs
- mount
- DIN rail (consumer unit / enclosure)
- channels
- 4
- enclosure
- Built-in black plastic enclosure — no separate housing required
- ip rating
- Not officially published; intended for indoor consumer-unit/enclosure installation only
- dimensions mm
- 96 x 53 x 59
- din rail modules
- ~6 (approx., based on standard 17.5mm module width)
- max load a total
- 40
- neutral required
- true
- power monitoring
- true
- max load a per channel
- 16