The Shelly Pro Series 4 PM from Allterco Robotics represents an advancement in integrated systems and automation. It is a DIN rail-mounted relay switch that provides control and connectivity for modern smart homes and offices. With Alexa compatibility, users can enjoy the convenience of voice-activated control and seamless integration into their existing smart home ecosystem. Dual connectivity via Wi-Fi and Bluetooth 4.2 ensures reliable and flexible connectivity and supports a wide range of network protocols. Safety is a priority; built-in features protect against overloads, overvoltages and overheating, ensuring a longer lifespan for both the relay and connected devices. In addition, the energy-efficient design with a consumption of only 4 W and a fire-resistant construction make the device an ideal choice for environmentally conscious and safety-focused users. Whether it is home automation or complex office systems, the Shelly Pro Series 4 PM offers a robust solution for efficient and secure environmental management.

It is important to know

Before choosing SHELLY Pro 4PM, it is crucial to understand what a four-channel Wi-Fi smart module with power metering means in practice and what choices and limitations DIN rail mounting brings. When making a decision, the most important considerations are the expansion of your smart home and verified compatibility with your existing network or application. Also consider what experience you will have in the long term with centralized management and control of your electricity consumption.

• The Switch works directly over a Wi-Fi network, so it doesn't require an additional hub or controller for basic functions, simplifying initial setup.
• With DIN rail mounting, the product is intended for permanent installation in an electrical cabinet, which requires a little more planning and is especially useful for more permanent solutions or renovations of electrical installations.
• The four-channel output allows you to control four devices or circuits from a single point, which is particularly useful for centralized control of lighting, sockets or other consumers in a room or floor.
• Accurate consumption measurement for each individual channel provides an overview of electricity consumption and can help optimize energy costs if you monitor the data regularly.
• Using Wi-Fi allows for quick integration into existing networks, but it should be noted that a larger number of smart Wi-Fi devices can affect the performance of the home network in the long term for more advanced systems.

Source of editorial recommendations: ENAA guides and team experience.

In practice

🟢 Easy upgrade of existing devices into smart switches

The product is very suitable for renovation or upgrade where you want to transform existing fixtures into smart switches without changing the wiring, thanks to DIN mounting and Wi-Fi connection.

🟢 Central management of multiple devices from one point

The four-channel design allows you to control multiple circuits or devices simultaneously, which is especially effective for larger rooms or divided functions (lights, outlets, heating).

🟢 Remote control via app

The product supports direct application control via Wi-Fi, so you can control devices anywhere you have internet access without additional hubs.

🟡 Gradual expansion of the smart home

The option to start without a hub is very convenient for the beginning; however, if you later consider a more advanced system with many devices, the Wi-Fi architecture may prove to be a limitation for expansion (network load, integration with control panels of different protocols).

🟢 Monitoring and optimization of electricity consumption

Each channel monitors consumption separately, which allows for an overview and easier detection of high-consumption consumers for cost optimization.

🟡 Control without a phone

Phone-free control is limited - for reliable physical control or voice control, check compatibility with supported systems and features based on your system.

Answers to frequently asked questions

Can I operate SHELLY Pro 4PM even when I'm not at home?

Yes, you can control the device via the app anywhere you have internet access.

Is it necessary to purchase a separate hub or switchboard for use?

No, the module works via a Wi-Fi network and does not require an additional control panel for basic operation.

Can I set each channel separately?

Yes, all four channels can be managed and monitored separately via the app.

What does DIN rail mounting mean?

DIN rail mounting means that the module is designed for installation in an electrical cabinet, which is a typical solution for permanent and safe installation of electrical circuit control.

What should I consider for larger smart systems?

If you are planning a large number of connected devices or advanced automation, consider the long-term performance of your Wi-Fi network and the ability to integrate with other protocols.

Description updated: September 2026

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