Shelly EM GEN3

Product Introduction

The Shelly EM Gen3 is a compact smart energy meter designed to monitor electricity consumption in real time for homes and smart building installations. Using external current transformer clamps, the device measures power usage on electrical circuits and reports the data to a smartphone, computer, or home automation system.

The meter supports two independent measurement channels, allowing users to monitor the energy consumption of two separate circuits simultaneously. This makes it ideal for tracking appliances, lighting circuits, solar systems, or overall household energy usage.

With built-in Wi-Fi and Bluetooth connectivity, the Shelly EM Gen3 connects directly to your network without requiring a separate hub. The device can operate locally within a network or integrate with cloud-based smart home platforms for advanced monitoring and automation.

Its compact form factor allows installation inside electrical wall boxes, distribution panels, or near electrical equipment, making it a flexible solution for retrofitting existing installations with smart energy monitoring capabilities.

Key Features

Dual-Channel Energy Monitoring
Measures power consumption of two independent electrical circuits using current transformer clamps.

Real-Time Power Measurement
Provides detailed energy data including voltage, current, and power consumption to help optimise electricity usage.

Wi-Fi and Bluetooth Connectivity
Connects directly to a 2.4 GHz Wi-Fi network and supports Bluetooth for fast device setup and communication.

Integrated Contactor Control Relay
Includes a built-in dry-contact relay that can control external contactors or trigger automation actions.

Local Data Storage
Stores energy data locally with minute-level logging, allowing historical analysis even without cloud connectivity.

Compact Retrofit Installation
Designed to fit inside electrical wall boxes or distribution panels for discreet installation.

Smart Home Integration

The Shelly EM Gen3 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 participate in automation scenarios such as:

• Monitoring total household electricity consumption
• Tracking power usage of specific appliances or circuits
• Automating contactors for high-power loads
• Generating alerts when power usage exceeds preset limits

Technical Specifications

Product Type: Smart Energy Meter
Model: Shelly EM Gen3
Measurement Channels: 2
Measurement Method: Current transformer clamps (CT)
Maximum Measurement Current: Up to 80 A per channel (depending on CT clamp)
Power Supply: 110–240 V AC, 50/60 Hz
Connectivity: Wi-Fi 2.4 GHz + Bluetooth
Relay Output: Dry contact relay for contactor control (2 A)
Data Logging: Local storage with minute-level recording
Device Power Consumption: < 1.2 W
Operating Temperature: −20 °C to 40 °C
Installation: Electrical wall box or distribution panel

What’s in the Box

Shelly EM Gen3 energy meter
1 × 50 A current transformer clamp
Mounting hardware
Quick start guide