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The Shelly Pro 3EM: A Comprehensive Guide to Your Shelly Energy Monitoring Device

  • Writer: JP
    JP
  • Dec 17, 2025
  • 4 min read

If you are looking to take control of your home's energy use, the Shelly Pro 3EM is a smart choice. This device is designed to help you monitor electricity consumption with ease and precision. Whether you are a homeowner or a renter, understanding how much energy you use can save you money and reduce your carbon footprint. In this guide, you will learn everything you need to know about this handy shelly energy monitoring device.


What Makes the Shelly Energy Monitoring Device Stand Out?


The Shelly Pro 3EM is not just any energy monitor. It is a professional-grade device that offers three-phase energy measurement. This means it can track energy consumption across multiple circuits, which is perfect for larger homes or small businesses with complex electrical setups.


Here are some key features that make it stand out:


  • Three-phase monitoring: Measures voltage, current, power, and energy on three separate phases.

  • Compact design: Fits neatly into your consumer unit or electrical panel.

  • Wi-Fi connectivity: Connects to your home network for real-time monitoring.

  • App control: Use the Shelly app to view data, set alerts, and manage your energy use.

  • Integration options: Works with popular smart home systems for automation.


This device is designed to be user-friendly, so you don’t need to be an electrician to understand how to use it. The setup process is straightforward, after professional installation, and the app provides clear insights into your energy consumption patterns.


Close-up view of Shelly Pro 3EM energy monitoring device installed in an electrical panel
Shelly Pro 3EM installed in electrical panel

How Does a Shelly Energy Monitoring Device Work?


Understanding how the Shelly Pro 3EM works will help you appreciate its value. The device connects to your home's electrical system and measures the flow of electricity through each phase. It uses sensors to detect voltage and current, then calculates power consumption in real time.


The data collected is sent over Wi-Fi to the Shelly app, where you can see detailed graphs and reports. This allows you to:


  • Track your energy use hour by hour.

  • Identify which appliances or circuits use the most power.

  • Set custom alerts if consumption exceeds a certain level.

  • Compare your energy use over days, weeks, or months.


By having this information at your fingertips, you can make smarter decisions about when and how to use electricity. For example, you might discover that your heating system uses a lot of power during certain times and adjust your thermostat accordingly.


What is a Shelly Pro 3EM Used For?


The Shelly Pro 3EM is incredibly versatile. It is primarily used for monitoring electricity consumption in homes and small businesses, but its applications go beyond simple tracking.


Here are some practical uses:


  1. Energy cost management: By knowing exactly how much energy you use, you can reduce waste and lower your bills.

  2. Load balancing: For homes with solar panels or battery storage, the device helps balance energy flows to maximise efficiency.

  3. Preventing overloads: Alerts can warn you if a circuit is drawing too much power, helping to avoid electrical faults.

  4. Smart home integration: Connect the device to your smart home system to automate energy-saving actions, like turning off devices when not in use.

  5. Environmental impact: Monitoring your energy use helps you reduce your carbon footprint by encouraging more sustainable habits.


The Shelly Pro 3EM is a powerful tool for anyone serious about energy management. It provides the data you need to make informed choices and improve your home's energy efficiency.


Smart home electrical panel with electrician inspecting
Smart home electrical panel with electrician inspecting

How to Install and Set Up Your Shelly Pro 3EM


Installing the Shelly Pro 3EM is a task you can handle with some help from an electrician. Here is a simple overview of the installation process:


The Shelly app guides you through the setup with clear instructions. Once installed, you can start monitoring your energy use immediately.


Tips for Getting the Most Out of Your Shelly Energy Monitoring Device


To make the most of your Shelly Pro 3EM, consider these practical tips:


  • Regularly check the app: Make it a habit to review your energy data weekly to spot trends.

  • Set alerts: Use notifications to warn you about unusual spikes in consumption.

  • Combine with smart plugs: For individual devices, smart plugs can help you control and monitor usage more precisely.

  • Integrate with home automation: Link the device to your smart home system to automate energy-saving routines.


By actively using the information from your Shelly energy monitoring device, you can reduce waste, save money, and contribute to a greener future.


Shelly Pro 3EM-400A DIN-rail Energy Meter
£263.36
Buy Now

Where to Find the Best Deals on Smart Home Devices


If you are interested in expanding your smart home setup, now is a great time to look for special offers. We often have discount periods where you can get devices from brands like Aqara, eufy, Reolink, and IMOU at reduced prices.


For reliable and genuinely useful whole-home automation products, check out carefreesmarthomes.co.uk/offers. We specialise in smart home . You can also find the Shelly Pro 3EM, making it simple to get everything you need in one place.


Taking advantage of offers means you can upgrade your home technology at a limited-time discount.


By now, you should have a clear understanding of what the Shelly Pro 3EM can do and how it can help you manage your home's energy use. With its professional features and user-friendly design, it is a smart investment for anyone wanting to be more energy-conscious and save money. Keep an eye on special offers to get the best value and enjoy the benefits of a smarter, more efficient home.

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