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Shelly PRO 4PM WiFi + Ethernet 4-gang smart relay switch with power meter

The brand new 2021 product of Shelly, the first member of the Shelly PRO product line, comes with 4 channels / gangs, WiFi + LAN + Bluetooth support. Shelly Pro 4PM features power metering for all gangs, has input for traditional switches and can be put on DIN-rail of electric cabinets.

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Factory SKU ID:
Supported protocols:
Bluetooth, Ethernet / LAN, Wi-Fi
In stock 45 pcs

4 channels DIN rail relay switch with Wi-Fi, LAN and Bluetooth connection


Professional 4 channels relay with Wi-Fi, LAN, and Bluetooth connection, suitable for home and facility automation with remote control and precise power management. DIN rail moutable insde a breaker box. Enhanced safety features and compatible with most used home automation platforms.

Shelly Pro line allows you full smart automation from the breaker box with no additional cables or wiring required. That makes it the perfect solution for new buildings and manufacturing facilities, which you can automate based on your or your business’s needs. The precise power measurement features of the PM devices will keep you informed about the electricity consumption of each connected device, making it possible to analyze the data and help you cut electricity costs.

And as all other Shelly devices, Shelly Pro Line devices can be controlled directly and without a hub through your smartphone with Shelly Cloud App. Manage and control your home or facility, set scenes, monitor power consumption data, and adjust settings wherever you are through the Cloud access, or only on the local network!


Shelly Pro 4PM features include:

  • LAN, Wi-Fi, and Bluetooth connection
  • 4 outputs, 16A each. Total device maximum of 40A
  • Precise power metering
  • Overpower and overvoltage protection of the load.
  • DIN rail mountable
  • 1.8-inch color screen with navigation keys

PRO 4PM is the first member of the Shelly PRO product line, which offers supreme home and facility automation with Shelly’s professional line of smart switches.

Enhanced with temperature, overpower, and overvoltage load protection, Shelly Pro series is designed to be installed inside the breaker box (DIN). Allowing full smart automation with no additional cables or wiring, Shelly Pro line is perfect for homes, offices, stores, business, and manufacturing facilities, as well as new buildings.

DIN rail mountable

The Shelly Pro Line is installed inside the breaker box and it is designed to meet the global DIN rail standardization. That makes it suitable for all kinds of buildings and ensures easy installation with no additional components needed.

Temperature protection - no danger of overheating inside the breaker box

In case of unsafe temperature levels or rapid temperature increase, device switches off the outputs and sends notification. Internal temperature sensor is measuring the heat every 100 ms.

Overpower protection - power metering enabled devices protect from overpower damages

Detected overpower will lead to outputs switch off by the device and it will immediately send notification. Overpower protection feature protects the device and other electrical equipment from potential damage.

Overvoltage protection - protect appliances from overvoltage with the power metering Shelly PRO devices

Voltage peaks could be dangerous for electrical appliances and machines. To avoid damage to the electrical appliances the device switches off the outputs when overvoltage peaks are detected and immediately sends a notification.

Flame retardant (V-0) - flame resistant materials for enhanced safety

All Shelly Pro components are produced with flame-resistant materials and will keep their construction even when exposed to high levels of heat.




  • HTTP/HTTPS webhooks for quick connection - Enhanced with HTTP/HTTPs webhooks, Shelly Pro line can easily connect with, notify or control another compatible equipment or 3rd party automation system.
  • Smart actions that follow the sunrise/sunset - Shelly Pro line can switch on/off the power, depending on the Sunset and Sunrise hour, which makes it perfect for dynamic control of the electrical equipment depending on the season.
  • Automation with weekly scheduling - Shelly Pro line allows you to set up to 50 actions based on your daily or weekly schedule with no need for an external hub or server.
  • Scripting for custom automation - Shelly Pro line fully supports mjS scripting, allowing customers to create own features and functionalities!_x000B_Shelly Pro line devices allow multiple scripts to be executed together, depending on various triggers as input/output status, sensor data or WLAN requests.

Product type:
smart WiFi relay with powermeter
Device power supply:
110V-240V AC
230V AC (live and neutral)
DIN rail compatible:
Max. power consumption:
4W, &lt
Embedded relay:
Dimmer feature:
Power consumption metering:
Number of gangs / circuits:
Rated voltage (output):
110V-240V AC
Rated current (output):
16A per channel, 40A in total
Physical on/off button on device:
External switch supported:
2-way or 3-way switching:
Momentary switching (inching):
yes, auto on and auto off settings available
Surge protection:
Overload protection:
Overheat protection:
Ethernet (RJ-45):
Wi-Fi standards:
802.11 b/g/n (2.4GHz)
RF transmitter / receiver:
Bluetooth pairing with phone, also Bluetooth remote controllers can be paired with it to remote control it, also Bluetooth hub features makes it possible to control other non-Bluetooth Shelly devices
Controllable from internet:
Manufacturer smartphone app:
yes, free app (Shelly Cloud) (iOS, Android)
Web admin interface:
yes, almost the same functionality as the app
Voice control:
Amazon Alexa and Google Assistant compatible
Cloud mode:
yes, Shelly devices may connect to factory cloud (optional setting)
LAN mode:
yes, works just in the local area network mode, with full functionality (adjustable)
REST API support:
MQTT support:
Supported integrations:
Amazon Echo, Google Home, HomeSeer, openHAB, Home Assistant, ioBroker, Hubitat, Hoobs, Symcan, Domoticz, nymea, SmartThings (beta), REST API
Schedulers, timers:
yes, (after synchronizing clock on the internet) limited number of timings operate in offline mode, any further timing can be run from the cloud in online mode
Notification functions:
send email, Shelly app notification
yes: on/off history in the app (the last 50 event for every Shelly account)
199 g/pcs
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