Shelly EM
£54.99
1 in stock
Overview
Shelly EM is a Wi-Fi energy monitor and contactor control device designed to monitor the energy consumption of electrical appliances, circuits, and systems in real time without requiring a hub. It connects directly to a Wi-Fi network and allows users to track power usage, set automations, and identify opportunities for efficiency. The device supports dual power metering for two circuits and integrates with smart home systems for remote control, data logging, and automation.
Key features
- Wi-Fi energy monitor with no hub required
- Dual independent power metering for two circuits
- Monitors real-time energy consumption and usage history
- Contactor control output (dry contact) for automated load control
- Compatible with the Shelly app and remote access via cloud or local network
- Works with voice assistants and home automation platforms
- Internal data storage with configurable history and alerts
Product information
Use cases
- Energy Monitoring
- Monitor real-time and historical energy usage for appliances, circuits, or entire electrical installations.
- Load Automation
- Automatically switch high-power devices such as heaters, boilers, or EV chargers using the built-in contactor control output.
- Energy Efficiency Analysis
- Identify high-consumption devices and optimise electricity usage to reduce energy costs.
- Home Automation Integration
- Integrate energy monitoring data into smart home platforms using REST API, MQTT, or supported voice assistants.
Technical specifications
Power
Power supply AC
110–230V ±10%, 50/60Hz
Measurement
Measurement channels
2
Maximum current
Up to 120A per channel (with compatible current transformer)
Power measurement
Yes
Contactor Control
Output type
Dry contact
Maximum load
2A at 230V AC
Operational
Operational temperature
0°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
42 × 36 × 14 mm
What’s included
- Shelly EM energy monitor module
