The Shelly EM Gen3 is a small form factor smart energy meter using up to 2 current transformers (contactless metering), which allows energy metering the consumption of electric appliances and reporting to a mobile phone, tablet, PC, or home automation system. It can work standalone in a local Wi-Fi network or it can also be operated through cloud home automation services. The Device has internal storage for data allowing for later retrieval. The Device has a single dry contact switch for controlling external loads.

Power Consumption Monitoring: Monitor the power consumption of connected devices in real time. This information can be valuable for understanding energy usage patterns and making informed decisions to reduce consumption.

Energy Efficiency Optimization: Identify electrical energy consumption patterns and optimize electricity usage.

Appliance Health Check: Keep track of the power usage of individual appliances to assess their health and performance over time. Sudden spikes or changes in power consumption may indicate issues with the appliance.

Cost Management: With the knowledge of power consumption, you can estimate the cost of running specific devices and manage your electricity expenses more effectively.

Space-Efficient Retrofitting: Integrate the device into standard electrical wall boxes, behind power sockets, light switches, or other locations with limited space.

Remote Monitoring: Shelly EM Gen3 supports publishing data to Shelly Cloud or other cloud-based data collection and storage systems. This allows you to monitor power consumption even when you're away from home.

Local Monitoring: Like the rest of the Shelly Wi-Fi line of devices Shelly EM Gen3 allows for local-only monitoring and automations. Access stored energy consumption records directly from the device UI. Automate locally with rules based on instantaneous power consumption or energy consumed over a period of time.

*Shelly EM Gen3 comes with 1 x 50A clamp included in the pack.

Specifications

Power

Power supply: 110-230V ±10, 50/60Hz AC

Power metering: Two channels, up to 80A each

Contactor control: Maximum load: 2A at 230V 50/60Hz

Electrical consumption: < 1.2W

External protection:

2A, tripping characteristic B or C,

6kA interrupting rating,

Energy limiting class 3

Features

Consumption history: At least 10 days of 1 min data resolution.

Working temperature: -20°C to 40°C / -5°F to 105°F

Humidity: 30% to 70% RH

Voltmeter (AC): 110-240 V~ 50/60 Hz

Voltmeter accuracy: ±2%

Ammeter (AC): 0 - 80A

Ammeter accuracy: ±2% (2-50 A), ±2% (1-2 A), ±5% (0-1 A)

Compatible current transformers:

• CT 50A (1 included in the package)

• CT 80A

Power and energy meters:

• Active and apparent power

• Active and apparent energy

• Power factor

• Fundamental active and fundamental reactive energy

Data export:

• CSV for PQ recorded values

• JSON format export through RPC

Connectivity

Wireless/WiFi Protocol: 802.11 b/g/n (2.4 GHz)

Frequency: 2412 - 2472 MHz

WiFi range (depending on local construction):

• up to 50 m outdoors

• up to 30 m indoors

Bluetooth: Yes

Bluetooth Protocol: 4.2

Bluetooth Range:

• up to 30m/100ft outdoors

• up to 10m/33ft indoors

Dimensions

(H x W x L): 37 x 42 x 16 mm