Description
Shelly Pro 4PM 4-Channel DIN Rail Smart Switch with Power Monitoring
Take professional control of multiple electrical circuits with the Shelly Pro 4PM, a powerful four-channel DIN-rail smart switch with individual energy monitoring, advanced automation capabilities and flexible network connectivity.
Designed for installation inside electrical distribution boards, the Shelly Pro 4PM combines four independent switching channels with integrated power measurement, allowing you to remotely control connected circuits while monitoring their individual electricity consumption in real time.
Each channel supports switching loads of up to 16A, with a combined maximum device capacity of 40A. This makes it an excellent solution for managing multiple lighting circuits, heating systems, geysers, pumps, appliances and other compatible electrical loads.
With built-in Ethernet, Wi-Fi and Bluetooth, an onboard colour LCD and support for advanced automation protocols, the Shelly Pro 4PM is equally suited to sophisticated residential smart homes, commercial installations and professional building automation projects.
Key Features & Benefits
Four Independent Switching Channels
Control up to four separate electrical circuits from one compact DIN-rail device.
Each channel can be switched independently, allowing you to automate different appliances, lighting circuits or electrical loads without installing a separate smart relay for each circuit.
- Four independently controlled relay outputs.
- Up to 16A switching capacity per channel.
- 40A maximum combined device load.
- Four external switch/button inputs.
- Remote switching and manual wall-switch control.
Ideal for consolidating multiple smart switching requirements inside an electrical distribution board.
Individual Real-Time Power Monitoring
Go beyond simple on/off switching with built-in energy monitoring on all four channels.
The Shelly Pro 4PM measures electrical consumption independently for each output, giving you detailed insight into how different circuits use electricity.
Monitor:
- Voltage
- Current
- Instantaneous power consumption (W)
- Accumulated energy consumption (Wh/kWh)
Use this information to identify energy-intensive circuits, monitor appliance consumption and develop more efficient energy management strategies.
With individual channel monitoring, you can understand exactly which circuits are consuming electricity rather than relying on a single measurement for your entire installation.
Professional Connectivity – Ethernet, Wi-Fi & Bluetooth
The Shelly Pro 4PM offers multiple connectivity options for reliable communication and flexible installation.
Ethernet (LAN): Connect directly to your network using the built-in RJ45 Ethernet port. A wired connection is particularly useful in distribution boards, server rooms and installations where network reliability is important.
Wi-Fi: Connect directly to your existing 2.4GHz wireless network without requiring a separate hub.
Bluetooth 4.2: Provides Bluetooth connectivity for supported device functions and convenient initial configuration.
The device can operate locally on your network or through compatible Shelly cloud services.
No proprietary smart home hub is required.
Onboard Colour LCD Display
Unlike many compact smart relays, the Shelly Pro 4PM features an integrated colour LCD with physical navigation buttons.
The display provides convenient access to device information without needing to open an app.
View:
- Individual channel on/off status.
- Network connection status.
- Wi-Fi and Ethernet connectivity.
- Bluetooth status.
- Device information and configuration menus.
The onboard controls also allow access to network settings, maintenance functions, reboot and factory reset options.
This is particularly useful for installers and technicians who need to inspect equipment directly inside an electrical distribution board.
Advanced Electrical Protection
The Shelly Pro 4PM incorporates several protection functions to help safeguard the device and connected circuits.
Built-in protection features include:
- Overpower protection.
- Overcurrent protection.
- Overvoltage protection.
- Overheating protection.
Configurable protection thresholds allow the device to respond to specified electrical conditions, helping prevent excessive loading and abnormal operating conditions.
The internal temperature sensor also helps monitor the device’s operating temperature.
These features provide an additional layer of protection alongside correctly selected circuit breakers and other electrical safety equipment.
Advanced Automation & Home Assistant Integration
The Shelly Pro 4PM is particularly appealing to smart home enthusiasts and professional automation installers.
It supports a comprehensive range of local automation and integration technologies, including:
- Home Assistant – Integrate switching and individual energy measurements into your smart home dashboards and automations.
- MQTT – Connect to MQTT-based automation platforms and systems.
- HTTP & Webhooks – Trigger external actions and integrate with other services.
- mJS Scripting – Create advanced automation logic directly on the device.
- KNXnet/IP – Integration with compatible KNX building automation systems.
- Shelly Cloud – Remote access and control through the Shelly Smart Control app.
- Google Home & Amazon Alexa – Voice control and supported smart home integrations.
-
Samsung SmartThings – Integration with the supported ecosystem.
The device also supports schedules, timers, scenes and local automation logic, giving you considerable flexibility when designing more advanced control systems.
For Home Assistant users, the ability to monitor all four channels independently makes it especially useful for energy dashboards, load management and automated switching.
DIN-Rail Mounting for Professional Installations
Designed specifically for electrical distribution boards, the Shelly Pro 4PM mounts directly onto a standard DIN rail.
Its three-module-wide form factor makes it suitable for installations where multiple circuits need to be managed from a central location.
Flexible Applications
The Shelly Pro 4PM is suitable for a wide range of residential and commercial applications.
Smart Home & Lighting
- Control multiple lighting circuits independently.
- Automate indoor and outdoor lighting.
- Schedule lighting based on time or occupancy.
- Monitor lighting circuit energy consumption.
Geysers & Water Heating
- Automate compatible electric geyser circuits.
- Schedule water heating.
- Monitor electricity consumption.
- Integrate geyser control into Home Assistant.
Heating & Climate Control
- Control compatible electric heating circuits.
- Automate underfloor heating.
- Monitor individual heating loads.
Pumps & Equipment
- Control compatible water pumps and other equipment.
- Automate operating schedules.
- Monitor electricity consumption.
Energy Management
- Monitor multiple circuits independently.
- Identify high-consumption electrical loads.
- Build energy monitoring dashboards.
- Develop automated load-management strategies.
For inductive loads such as motors, fans and compressors, an appropriately rated RC snubber is required in accordance with Shelly’s wiring instructions.
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Shelly |
| Product | Shelly Pro 4PM |
| Model | SPSW-104PE16EU |
| Channels | 4 independent relay outputs |
| Maximum Current | 16A per channel |
| Maximum Combined Load | 40A total |
| Operating Voltage | 110–240V AC |
| Frequency | 50/60Hz |
| Power Supply | 110–240V AC |
| Neutral Wire | Required |
| Power Monitoring | Individual channel monitoring |
| Measurements | Voltage, current, power and energy |
| Connectivity | Ethernet, Wi-Fi and Bluetooth |
| Wi-Fi Standard | 802.11 b/g/n, 2.4GHz |
| Bluetooth | Bluetooth 4.2 |
| Ethernet | RJ45 |
| Display | Integrated colour LCD |
| Physical Controls | Three navigation buttons |
| External Inputs | 4 switch/button inputs |
| Automation | Schedules, webhooks, scripting and MQTT |
| Integrations | Home Assistant, KNXnet/IP, Alexa, Google Home and more |
| Mounting | DIN rail |
| DIN Rail Width | 3 modules |
| Dimensions | 96 × 53 × 59 mm |
| Colour | Black |
What’s Included?
- 1 × Shelly Pro 4PM smart relay.
Professional Multi-Circuit Smart Control
The Shelly Pro 4PM is an excellent solution for anyone looking to centralise smart switching and energy monitoring inside an electrical distribution board.
Combining four independent 16A switching channels, individual power monitoring, Ethernet connectivity, an onboard colour display and extensive automation capabilities, it provides a powerful foundation for modern smart homes and professional electrical installations.
Whether you’re automating geysers, lighting, heating or multiple appliance circuits, the Shelly Pro 4PM delivers the control, visibility and flexibility needed to build a smarter, more energy-aware electrical installation.
Installation note: This is a professional DIN-rail electrical device and requires installation inside a suitable distribution board. A neutral connection is required. The 40A combined maximum rating must not be exceeded, and appropriate upstream circuit protection and conductor sizing must be provided. For inductive loads, follow Shelly’s RC snubber wiring requirements. Installation by a qualified electrician is recommended.
