Shelly EM
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
Use Cases
What’s Included
Technical Specifications
Power
Measurement
Maximum current: Up to 120A per channel (with compatible current transformer)
Power measurement: Yes
Contactor Control
Maximum load: 2A at 230V AC
Operational
Device power consumption: < 1 W
Connectivity
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)