Shelly EM Gen3
Shelly EM Gen3 - Image 2
Shelly EM Gen3 - Image 3
Shelly EM Gen3 - Image 4
Shelly EM Gen3 - Image 5

Shelly EM Gen3

£69.99

5 in stock

Categories: , , Tag: Brand:

Overview

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

  • Dual-channel energy monitoring with CT clamps
  • Supports up to 80 A per channel (one 50 A clamp included)
  • Integrated dry contact relay for contactor control
  • Real-time power and energy measurement
  • On-device data storage for up to 10 days
  • Cloud logging with up to 365 days of history
  • Over-consumption and excess energy protection
  • Wi-Fi operation with no hub required
  • Bluetooth for setup and BLE proxy
  • Embedded web interface and local scripting support

Product information

Use cases
  • Home and business energy monitoring
  • Track electricity consumption across circuits or appliances to understand usage patterns and optimise energy efficiency.
  • Appliance and circuit health monitoring
  • Monitor individual appliances to detect abnormal consumption and identify potential faults early.
  • Cost and consumption optimisation
  • Identify high-consumption devices and reduce energy costs through insights and automation.
  • Contactor-based load control
  • Use the integrated dry contact relay to control contactors for protection, automation, or energy management scenarios.
Technical specifications
Power
Power supply
110–230 V AC ±10%, 50/60 Hz
Device consumption
< 1.2 W
External protection
2 A (B or C curve, 6 kA, energy limiting class 3)
Energy Measurement
Measurement channels
2
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
Relay type
Dry contact
Maximum load
2 A at 230 V AC, 50/60 Hz
Measurement Accuracy
Voltage measurement range
110–240 V AC (±2%)
Current measurement range
0–80 A
Accuracy
±2% (2–50 A), ±2% (1–2 A), ±5% (0–1 A)
Data and Storage
Local data storage
Up to 10 days (1-minute intervals)
Cloud data history
Up to 365 days
Connectivity
Wi-Fi
2.4 GHz 802.11 b/g/n
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 temperature
−20 °C to +40 °C
Operating humidity
30–70% RH
Physical
Mounting
In-wall, behind switch or socket
Dimensions
37 × 42 × 16 mm
What’s included
  • Shelly EM Gen3
  • 50 A current transformer clamp

Related products