In the age of smart homes and growing energy awareness, monitoring your energy consumption accurately and in real time is more important than ever. The Shelly Pro 3EM (120A) is a sophisticated solution designed for homeowners, professionals, and businesses looking to take control over their energy usage. This DIN rail mountable, three-phase smart energy meter combines WiFi, Bluetooth, and LAN connectivity, delivering precise energy data to optimize usage, reduce costs, and support renewable energy integration. In this review, we explore how the Shelly Pro 3EM stands out in the smart energy meter market and whether it’s the right fit for your energy management needs.
Key Features
3-Phase Energy Monitoring with High Accuracy
The Shelly Pro 3EM tracks energy consumption and production across three electrical phases with 1% active energy measurement accuracy. This allows users to get granular insight into individual phase consumption, useful for homes, offices, or industrial setups equipped with three-phase power. By monitoring voltage, current, power factor, and instantaneous power per phase, users can quickly identify inefficiencies or potential electrical issues.
Multi-Connectivity: WiFi, Bluetooth & LAN
Flexibility is key with the Shelly Pro 3EM’s connectivity options. Whether you prefer wireless control via WiFi and Bluetooth or want a stable wired LAN connection, this meter integrates smoothly into existing home automation or industrial networks. Its compatibility with cloud platforms and local networks provides versatile control possibilities without necessitating complex VPNs or additional hubs.
Discover Smart Energy Management
Two-Way Energy Consumption Monitoring
A standout feature is the Shelly Pro 3EM’s ability to measure two-way energy flow, meaning it can track both energy consumed from and energy fed back into the grid. This is especially critical for users with solar panels or wind turbines, allowing them to maximize renewable energy usage while protecting appliances from voltage drops or spikes.
Transform Your Home with Shelly Pro 3EM
Industrial-Grade Security & Protocol Support
Security in smart devices is paramount, and Shelly Pro 3EM meets this demand with industry-grade security protocols including mTLS for MQTT, HTTP, and secure WebSockets. For professionals, support for MODBUS protocol facilitates integration into industrial monitoring systems, enabling seamless voltage, current, and energy data sampling.
Local Control & Automation
The meter supports local scripting and webhooks to automate your energy controls without relying on cloud services. Users can set customized rules such as adjusting heating, cooling, or even electric vehicle charging based on real-time energy production from solar panels. This autonomy enhances privacy and reliability.
Shop Shelly Pro 3EM for Seamless Automation
Renewable Energy Optimization
For solar and wind power users, Shelly Pro 3EM offers dedicated monitoring and control features. It provides real-time updates and detailed historical data up to 60 days, breaking down energy generation and consumption every minute. Such detailed analytics empower users to optimize their energy flow effectively, boosting savings and sustainability.
Pros & Cons
Pros
- Accurate, real-time monitoring: Customers praise the meter’s precision and the comprehensive data it provides, ideal for both home and industrial use.
- Versatile connectivity: Users appreciate the multiple connectivity options that allow easy integration into existing networks.
- Robust security measures: Positive reviews highlight peace of mind knowing their data and control interfaces are well protected.
- Supports solar and renewable setups: Many solar panel owners value the detailed two-way consumption insights and automation features.
- No additional hub required: Simplifies setup and costs compared to many other smart meters requiring dedicated hubs.
Cons
- Installation complexity: Some users mention that installation and initial configuration may require professional assistance due to the DIN rail mounting and wiring demands.
- Advanced features might have a learning curve: For users less familiar with scripting or automation, setting up custom controls can be challenging.
- Price point: At around $183.74, the Shelly Pro 3EM is positioned as a premium product, which might deter budget-conscious buyers.
Who Is It For?
The Shelly Pro 3EM smart energy meter is ideal for tech-savvy homeowners, electricians, system integrators, and small to medium businesses needing detailed and accurate three-phase energy data. It particularly benefits users with solar panels or other renewable energy systems who want to monitor and optimize their energy flow. If you desire secure, cloud-capable, yet locally controllable energy monitoring without the hassle of additional hubs, the Shelly Pro 3EM is built for you. However, if you prefer simplicity over depth and automation, or have a single-phase setup, simpler devices might better suit your needs.
Final Thoughts
Overall, the Shelly Pro 3EM (120A) stands out as a powerful and precise smart energy meter that meets the needs of modern energy-conscious users. It balances professional-grade features like MODBUS support and mTLS security with user-friendly connectivity and insightful analytics. While its installation and feature set might be complex for beginners, its detailed real-time and historical data coupled with local automation capability make it a valuable tool for anyone looking to maximize home or business energy efficiency, especially in systems incorporating solar or alternative energy sources. If you’re serious about smart home automation and energy management, the Shelly Pro 3EM deserves strong consideration.
As an Amazon Associate, We earn from qualifying purchases.
