Shelly EM Gen4

Shelly EM Gen4Shelly EM Gen4_front view1.png

 

 

Device identification

  • Device name: Shelly EM Gen4

  • Device model: S4EM-002CXCEU

  • Device SSID: ShellyEMG4-XXXXXXXX

  • BLE model ID: 0x1036

Short description

Shelly EM Gen4 (the Device) 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 Gen4 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 Gen4 can be retrofitted into standard electrical wall boxes, next to electrical appliances, power sockets, or in other places with limited installation space.
Shelly EM Gen4 has an embedded Web Interface which can be used to monitor, configure, and control the device.
The device has multi-protocol wireless MCU which provide Zigbee and Bluetooth connectivity ensuring a secure connection.
This device is compatible with Matter.

Main features

  • Compact form factor

  • Single phase, two channels measurement

  • Current transformer connection

  • Dry contact relay for contactor control

  • Real-time clock

  • Data logs stored on device for at least 30 days of 1 minute data records

  • Upgraded with an improved processor and the addition of Zigbee connectivity

Use cases

  • 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 Gen4 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 Gen4 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 consumer for a period of time.

Main applications

  • Residential

  • MDU (Multi Dwelling Units - apartments, condominiums, hotels, etc.)

  • Light commercial (small office buildings, small retail/restaurant/gas station, etc.)

  • Government/municipal

  • University/college

  • Farming

Simplified internal schematics

EM-Gen3-internal-schematics.png

Connectivity

  • Wi-Fi

  • Bluetooth

  • Zigbee

  • Matter

Protocols

  • Zigbee

  • MQTT

  • HTTP

  • HTTPS

  • WebSocket

  • RPC

Safety function

 

  • Overheating protection

  • Overvoltage protection

  • Overcurrent protection

  • Overpower protection

Supported load types

 

  • Resistive (incandescent bulbs, heating appliances)

  • Capacitive (capacitor banks, electronic equipment, motor starting capacitors)

  • Inductive with RC Snubber (LED light drivers, transformers, fans, refrigerators, air-conditioners, washing machines, tumble dryers)

User interface

Inputs

  • One (Control) button

    • Press and hold for 5 seconds to enable Device access point and Bluetooth connection.

    • Press and hold for 10 seconds to factory reset the Device.

 

Specifications

Quantity

Value

Physical

Size (HxWxD):

37x42x16 mm / 1.46x1.65x0.63 inch

Weight:

26 g / 0.92 oz

Screw terminals max torque:

0.4 Nm / 3.5 lbin

Conductor cross section:

0.5 to 4 mm² / 20 to 11 AWG (solid, stranded, and bootlace ferrules)

Conductor stripped length:

6 to 7 mm / 0.24 to 0.28 in

Mounting:

Wall console

Shell material:

Plastic

Shell color:

White

Connectors color:

Grey (Mouse Grey RAL7005, R(106) G(110) B(106), HEX #6A6E6A, LRV 15.19.)

Environmental

Ambient working temperature:

-20 °C to 40 °C / -5 °F to 105 °F

Humidity:

30 % to 70 % RH

Max. altitude:

2000 m / 6562 ft

Electrical

Power supply voltage AC:

110 - 240 V, 50/60 Hz

Power supply voltage DC:

N/A

Power consumption:

< 1 W

External protection:

2 A, tripping characteristic B or C,
6 kA interrupting rating,
Energy limiting class 3

Output circuits ratings

Max switching voltage AC:

240 V

Max switching voltage DC:

N/A

Max. switching current:

2 A

Sensors, meters

Voltmeter (AC):

110 - 240 V

Voltmeter accuracy:

±2 %

Ammeter (AC):

0 - 120 A

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

  • CT 120A

Power and energy meters:

  • Active and apparent power

  • Active and apparent energy

  • Power factor

No load threshold:

30 VA per phase

Measurement data storage:

At least 30 days of 1 min data resolution

Data export:

CSV for PQ recorded values

JSON format export through RPC

Internal-temperature sensor:

Yes

Radio

Wi-Fi

Protocol:

802.11 b/g/n/ax

RF band:

2412 - 2484 МHz

Max. RF power:

< 20 dBm

Range:

Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
(Depends on local conditions)

Bluetooth

Protocol:

5 (LE)

RF band:

2402 - 2480 MHz

Max. RF power:

< 20 dBm

Range:

Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
(Depends on local conditions)

Zigbee

Protocol:

802.15.4

Zigbee repeater:

Yes

RF bands:

2405 to 2480 MHz

Max. RF power:

< 20 dBm

Range:

Up to 100 m / 328 ft indoors and 300 meters / 984 ft outdoors
(Depends on local conditions)

Microcontroller unit

CPU:

ESP32C6

Flash:

16MB

Firmware capabilities

Schedules:

20

Webhooks (URL actions):

20 with 5 URLs per hook

Scripting:

Yes

MQTT:

Yes

Basic wiring diagrams

EM Gen4 wiring diagram.png


Legend

Terminals

Wires

O

Load circuit output terminal

L

Live (110-240 V~) wire

I

Load circuit input terminal

N

Neutral wire

IA

First channel current transformer input

Current transformers

IB

Second channel current transformer input

CTA

First channel current transformer

L

Live (110-240 V~) terminal

CTB

Second channel current transformer

N

Neutral terminal

 

 

Shelly Smart Control

Troubleshooting

--- DESCRIBE POSSIBLE CAUSES AND THE WAYS TO ALLEVIATE THEM ---

Components and APIs

Compliance

 

Printed user guide