SHELLY - WiFi-operated Energy Meter Shelly EM Gen3

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 single dry contact switch for controlling external loads.

Shelly EM Gen3 can be accessed, controlled, and monitored remotely from any place where the User has internet connectivity, as long as the device is connected to a Wi-Fi access point and the Internet.

Shelly EM Gen3 can be retrofitted into standard electrical wall boxes, next to electrical appliances, power sockets, or in other places with limited installation space.

Shelly EM Gen3 has an embedded Web Interface which can be used to monitor, configure, and control the device.

Monitor and save energy from anywhere

Unlock the power of smart energy use with detailed insights into your appliances' power consumption patterns. Integrate Shelly EM Gen3 into standard electrical wall boxes, behind power sockets, light switches, or other places with limited space. By identifying how and when your connected appliances use energy, you can optimize usage for maximum efficiency and lower your electricity bills.

Dry contact switch

For contactor control of heavier loads

Local data storage

Data logs stored on device for up to 10 days in 1-minute intervals. When connected to the cloud, data logs go back to 365 days.

Smart Scenes

Set custom scenes by combining Shelly EM Gen3 with your other Shelly devices to control energy use.

Scripting

Fully supports scripting, allowing you local control and custom functionalities.

Note : Shelly EM Gen3 comes with a 50 A clamp included in the pack

Features of Shelly EM Gen3

• Wi-Fi and Bluetooth connectivity
• Single phase, two channels measurment
• Up to 2 current transformers connection (contactless metering)
• Dry contact switch for contactor control
• Shelly chip with 8 MB memory
• Local data logs stored on device for up to 10 days in 1-minute intervals
• Smart schedules
• Real-time clock
• Supports scripting, webhooks, MQTT, WebSocket, HTTP, RPC protocols
• Wide integration into smart automation systems

Technical specifications of Shelly EM Gen3

• Size (HxWxD): 37x42x16 mm 
• Weight:
• EM Gen3 - 23 g 
• CT 50A - 50 g 
• Screw terminals max torque: 0.4 Nm 
• Conductor cross section: 0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules)
• Conductor stripped length: 6 to 7 mm 
• Mounting: Wall console, Electrical cabinet
• Shell material: Plastic
• Shell color: White, Charcoal gray
• Connectors color: Black
• Ambient working temperature: -20 °C to 40 °C
• Humidity: 30 % to 70 % RH
• Max. altitude: 2000 m 
• Power supply: 110 - 240 V~ 50/60 Hz
• Power consumption: < 1.2 W
• External protection: 2 A, tripping characteristic B or C, 6 kA interrupting rating, Energy limiting class 3
• Max. switching voltage: 240 V~
• Max. switching current: 2 A/240 V~
• 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 (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
• Channel-to-channel calibration minimum load: 500 W
• No load threshold: 30 VA per channel
• Measurement data storage: At least 10 days of 1 min data resolution
• Data export: CSV for PQ recorded values, JSON format export through RPC
• Internal-temperature sensor: Yes
• Wi-Fi Protocol: 802.11 b/g/n
• RF band: 2412 - 2472 МHz
• Max. RF power: < 20 dBm
• Range: Up to 30 m / 100 ft indoors and 50 m (Depends on local conditions)
• Bluetooth Protocol: 4.2
• RF band: 2402 - 2480 MHz
• Max. RF power: < 4 dBm
• Range: Up to 10 m / 33 ft indoors and 30 m (Depends on local conditions)
• CPU: ESP-Shelly-C38F
• Flash: 8 MB
• Schedules: Yes
• Webhooks (URL actions): 20 with 5 URLs per hook
• Scripting: Yes
• MQTT: Yes
• Encryption: Yes (Transport level)
• Authentication: Yes (Application and transport level)