Shelly 3EM
£119.99
1 in stock
Overview
Shelly 3EM is a Wi-Fi three-phase energy monitor designed for precise monitoring of electricity consumption in residential, commercial, and industrial installations. It connects directly to your Wi-Fi network with no hub required and allows real-time measurement of energy usage across three independent phases or circuits. Shelly 3EM supports bidirectional energy monitoring, making it suitable for tracking consumption and solar power generation, and includes a contactor control output for load automation. It integrates with the Shelly app and home assistant for monitoring, logging, and automation.
Key features
- Wi-Fi three-phase energy monitor with no hub required
- Measures power, voltage, current, and energy on up to three independent phases
- Supports bidirectional energy monitoring for consumption and energy generation
- Contactor control output for automated load switching
- Real-time and historical energy usage tracking
- Works with the Shelly app for local and remote monitoring
- Compatible with Amazon Alexa, Google Assistant, and Home Assistant
- Supports schedules, automation rules, REST API, and MQTT
Product information
Use cases
- Three-Phase Energy Monitoring
- Monitor real-time and historical electricity usage across three-phase systems or multiple circuits.
- Solar and Energy Generation Tracking
- Track energy produced by solar panels or other generation sources using bidirectional energy measurement.
- Load Automation
- Automatically control high-power loads such as heaters, EV chargers, or machinery using the built-in contactor output.
- Home and Building Automation
- Integrate detailed energy data into automation platforms using REST API, MQTT, or supported voice assistants.
Technical specifications
Power
Power supply AC
110–240V ±10%, 50/60Hz
Measurement
Measurement channels
3
Maximum current
Up to 120A per channel (with compatible current transformer)
Power measurement
Yes
Energy measurement
Yes
Bidirectional measurement
Yes
Contactor Control
Output type
Dry contact
Maximum load
10A at 230V AC
Operational
Operational temperature
-20°C to +40°C
Device power consumption
< 1 W
Connectivity
Wireless protocol
Wi-Fi 802.11 b/g/n
Radio frequency
2412–2484 MHz
Radio signal power
1 mW
Range
Up to 50 m outdoors and up to 30 m indoors (depending on building materials)
Dimensions
Size
73 × 57 × 22 mm
What’s included
- Shelly 3EM energy monitoring module
- Three current transformer clamps
