Shelly Pro 4PM 4-Channel DIN Review: Specs, Pros and Cons

What stands out

• Four integrated precision power meters for independent channel monitoring
• Supports up to 16A per channel and 40A total capacity
• Functions as a Bluetooth gateway for enhanced connectivity
• Includes overpower, overvoltage, and temperature load protection
• Compatible with Alexa and Google Home ecosystems

Who it fits

Shelly Pro 4PM Key Specs Explained

Connectivity: Wi-Fi, Bluetooth

This device connects to your home network via Wi-Fi and uses Bluetooth for local setup and gateway functions. You can control it remotely through the internet or locally via your phone. The Bluetooth capability allows it to act as a gateway, helping other nearby devices connect to your network. This dual approach ensures reliable communication whether you are at home or away. It simplifies initial configuration without needing a separate hub for basic pairing.

Smart Home Compatibility: Alexa, Google Home

The Shelly Pro 4PM integrates directly with major voice assistants like Amazon Alexa and Google Home. You can use voice commands to toggle channels or check status without opening an app. This compatibility allows you to include the relay in existing smart home routines. For example, you can trigger actions based on voice commands or other smart device events. It ensures the device fits into ecosystems you likely already use, reducing the need for additional proprietary apps for daily control.

Channels: 4-Channel

This relay contains four independent switching channels, allowing you to control four separate circuits from one unit. Each channel can handle up to 16A of current, with a total device capacity of 40A. This setup is ideal for managing multiple appliances or lighting zones in a single DIN rail enclosure. You can automate each circuit individually or group them for simultaneous operation. It reduces the need for multiple single-channel relays, saving space in your breaker box while offering precise control over each load.

Power Metering: 4 integrated precision power meters

Each of the four channels includes a built-in precision power meter to monitor energy consumption independently. You can track exactly how much electricity each connected device uses in real time. This data helps identify energy waste and optimize usage patterns. You can view this information in the Shelly Smart Control app to adjust schedules or detect anomalies. For users focused on efficiency, this feature provides actionable insights into household energy habits without requiring external sensors or submeters.

Physical Design and Build Quality

The Shelly Pro 4PM is a compact device designed for DIN rail mounting inside breaker boxes. According to the listing, the unit measures 1.39 inches in length and 0.81 inches in width. It weighs 5.29 ounces. These dimensions allow it to fit neatly into standard electrical panels without taking up excessive space. The black finish blends with most industrial and residential panel interiors. This small footprint is critical for users who need to install multiple relays in a single enclosure. The device supports up to 16A per channel, with a total capacity of 40A. This high current rating means you can control heavier loads without worrying about overheating. The build quality includes protection against temperature spikes, overpower events, and overvoltage. These safeguards are integrated directly into the housing. You do not need external components for basic safety. The design prioritizes durability and safety in confined electrical spaces. It is suitable for homes, offices, and manufacturing facilities. The compact size does not compromise its ability to handle significant electrical loads. You can install it confidently knowing it meets standard safety requirements for DIN rail applications. The physical layout is straightforward, focusing on functionality over aesthetics. This makes it an ideal choice for technical users who value performance. The device is built to last in demanding environments. It offers a reliable solution for smart home automation. The materials used ensure long-term stability. You can trust the build quality for daily use. The design is practical and efficient. It serves its purpose well. The Shelly Pro 4PM is a solid choice for energy management. Its physical attributes support its technical capabilities. You get a robust device that fits your needs.

Setup and Daily Use Guide

You install the Shelly Pro 4PM inside a breaker box on a standard DIN rail. This placement keeps the device secure while allowing you to access the connections for your circuits. The unit connects to your home network via Wi-Fi. You also use Bluetooth for local setup and to act as a gateway for other devices. This dual connectivity ensures you can control the relay remotely or locally.

The Shelly Smart Control App is your primary interface. You use it to configure individual channels, manage settings, and create personalized scenes. You can combine multiple Shelly devices to trigger specific actions. The app sends notifications for all automated events, keeping you informed of changes in your home automation system.

Daily use involves monitoring energy consumption for each of the four channels independently. The built-in precision power meters provide this data, allowing you to track usage per circuit. You can set schedules and scripts to improve efficiency in halls, garages, or storage rooms. The device also integrates with Shelly 3EM, giving you real-time information on solar or wind energy generation versus consumption.

The Pro Series includes temperature, overpower, and overvoltage load protection. These features help maintain system stability during everyday operation. You can connect the relay to various appliances to automate their power supply. The system supports Alexa and Google Home, enabling voice control for your automated scenes and schedules.

Before You Buy Shelly Pro 4PM

This device is a DIN rail relay, not a thermostat. It manages circuits, not room temperature. You need a separate thermostat for HVAC control. Check your home network. It uses Wi-Fi for remote access. Bluetooth helps with initial setup. Ensure your router supports the required bands. Verify compatibility with your voice assistant. It works with Alexa and Google Home. Plan your wiring. Each channel handles up to 16A. Total capacity is 40A. Do not exceed these limits. You may need additional relays for more circuits. The unit fits inside breaker boxes. Keep it accessible for maintenance. Monitor energy usage per channel. This helps identify inefficient appliances. It integrates with solar data via Shelly 3EM. Consider your automation needs. You can create scenes using the app. Check if you need LAN connectivity. It supports both Wi-Fi and LAN. This provides flexibility for your network setup.

Check before you buy

• Confirm you need circuit control, not temperature regulation
• Verify Wi-Fi and Bluetooth support in your home
• Check Alexa or Google Home compatibility
• Ensure breaker box has space for DIN rail

The product at a glance

1

Shelly Pro 4PM 4-Channel DIN Rail Smart Relay

Best for: Detailed energy monitoring in breaker boxes

Connectivity

Wi-Fi, Bluetooth

Smart Home Compatibility

Alexa, Google Home, Home Assistant

Network Interface

LAN, Wi-Fi

Length

1.39 inches

Width

0.81 inches

Weight

5.29 ounces

View on Amazon: Shelly Pro 4PM 4-Channel DIN Rail Smart Relay Affiliate link

The Shelly Pro 4PM is a single-phase, four-channel DIN rail relay designed for breaker box installation. It supports Wi-Fi and LAN connectivity with Bluetooth gateway capabilities. Each channel handles up to 16A, totaling 40A, and includes integrated precision power meters for independent energy monitoring. It works with Alexa and Google Home. This unit suits users needing detailed energy tracking and robust load protection for multiple circuits.

Pros

• Four integrated precision power meters for independent channel monitoring
• Supports up to 16A per channel with 40A total capacity
• Includes temperature, overpower, and overvoltage load protection
• Functions as a Bluetooth gateway for enhanced connectivity

Cons

• Requires installation inside a breaker box on a DIN rail
• Limited to single-phase power systems
• No local display for manual status checks

Good fit if

• You need independent energy monitoring for multiple circuits
• You want to install smart controls directly in your breaker box
• You require overload and overvoltage protection for connected appliances

Skip if

• You need a multi-phase power solution
• You prefer plug-and-play devices without wiring
• You require a local display for manual operation

Verdict: Shelly Pro 4PM 4-Channel DIN Relay provides precise energy tracking and robust protection for users installing smart automation directly into their electrical panels.

Specifications side by side

Frequently asked questions

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