Shelly EM Gen3
Shelly EM Gen3 is a Wi-Fi operated dual-channel energy meter with integrated contactor control, designed for accurate real-time monitoring of electrical consumption. It supports up to two current transformers (CT clamps), enabling precise measurement of individual circuits or appliances from a compact, in-wall form factor.
Built for both local and cloud-based operation, Shelly EM Gen3 includes on-device data storage, long-term cloud logging, and a dry contact relay for contactor control. It connects directly over Wi-Fi with no hub required, uses Bluetooth for quick setup, and supports advanced local automation via scripting and an embedded web interface. One 50 A CT clamp is included, with optional support for up to 80 A per channel using additional clamps.
Key Features
Use Cases
What’s Included
Technical Specifications
Power
Device consumption: < 1.2 W
External protection: 2 A (B or C curve, 6 kA, energy limiting class 3)
Energy Measurement
Maximum current per channel: Up to 80 A
Included CT clamp: 50 A
Supported CT clamps: 50 A (included), 80 A (optional)
Measured metrics: Active and apparent power and energy, power factor, reactive energy
Contactor Control
Maximum load: 2 A at 230 V AC, 50/60 Hz
Measurement Accuracy
Current measurement range: 0–80 A
Accuracy: ±2% (2–50 A), ±2% (1–2 A), ±5% (0–1 A)
Data and Storage
Cloud data history: Up to 365 days
Connectivity
Wi-Fi range: Up to 50 m outdoors / 30 m indoors (environment dependent)
Bluetooth: 4.2
Bluetooth range: Up to 30 m outdoors / 10 m indoors
Environment
Operating humidity: 30–70% RH
Physical
Dimensions: 37 × 42 × 16 mm