Shelly PRO EM - 50

Product Introduction

The Shelly Pro EM-50 is a professional-grade single-phase energy meter designed for installation inside electrical distribution boards using a DIN-rail mounting system. It allows users to monitor electricity consumption in real time while integrating energy monitoring into advanced smart home or building automation systems.

The device supports two independent measurement channels, enabling simultaneous monitoring of two electrical circuits within the same phase. Using external current transformer clamps, the meter can measure loads up to 50 A per channel, making it suitable for tracking power usage of appliances, circuits, solar systems, or entire rooms.

With integrated Wi-Fi, LAN, and Bluetooth connectivity, the Shelly Pro EM-50 provides flexible communication options for both local and cloud-based monitoring. It can operate independently in a local network or integrate with home automation platforms for detailed energy analytics and automated energy management.

Key Features

Dual-Channel Energy Monitoring
Monitors two separate circuits simultaneously, providing detailed insights into energy consumption.

Up to 50A Measurement Per Channel
Supports current transformer clamps capable of measuring loads up to 50 A per circuit.

Professional DIN-Rail Installation
Designed for installation inside electrical distribution boards for centralized energy monitoring.

Integrated Dry-Contact Relay
Includes a built-in relay that can control external contactors or automation triggers.

Real-Time Power Monitoring
Reports voltage, current, active power, and energy consumption data in real time.

Local Control and Automation
Supports scripting, automation rules, and integration with smart home platforms.

Smart Home Integration

The Shelly Pro EM-50 integrates with a wide range of smart home ecosystems and automation platforms.

Supported integrations include:

• Shelly Smart Control App
• Amazon Alexa
• Google Home
• Home Assistant
• MQTT and REST API automation systems

Once connected, the energy meter can be used for automation scenarios such as:

• Monitoring power consumption of specific circuits
• Tracking solar energy production and consumption
• Controlling contactors based on energy usage
• Managing load balancing and energy optimisation

Technical Specifications

Product Type: Smart Energy Meter
Model: Shelly Pro EM-50
Measurement Channels: 2
Maximum Current Measurement: Up to 50 A per channel
Power Supply: 110–240 V AC, 50/60 Hz
Connectivity: Wi-Fi 2.4 GHz, Ethernet (LAN), Bluetooth
Measurement Data: Voltage, current, active power, apparent power, energy consumption
Accuracy: Approx. ±1% energy measurement accuracy
Data Storage: Up to 60 days of historical data at 1-minute intervals
Mounting: DIN-rail installation
Operating Temperature: −20 °C to 40 °C

What’s in the Box

Shelly Pro EM-50 energy meter
2 × 50 A current transformer clamps
Mounting hardware
Quick start guide