Shelly Pro 3EM-400A

Industrial Solutions

MODBUS support for easy and fast deployment in existing industrial installations.

Fully supports mjS scripting, allowing you to create advanced customizations and feature for your particular industrial automations.

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Shelly 2 Gen 3

Remotely control a wide range of home appliances and office equipment from anywhere. Retrofit your standard electrical wall boxes, power sockets, and light switches or other places with limited space.

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Using Shelly devices for advanced automation will enable you to save and earn more!

With the diverse connectivity options, Shelly lowers the cost of integrations and allows advanced automations by connecting to your automation system or to cloud based IoT service providers.

Shelly Solutions

A person holds a tablet displaying energy monitoring and analysis graphs in front of an open electrical control panel with wires and components visible.
A circular icon of a washing machine with the word “ENERGY” at the top and a lightning bolt symbol in the center, indicating energy efficiency or power-saving features.

Precise Energy Management

Always have another source of your critical information, validating your installations proper management and efficiency. Receive alerts and notifications, еnsuring you or your client have precise energy tracking.
A circular icon of a washing machine with the word “ENERGY” at the top and a lightning bolt symbol in the center, indicating energy efficiency or power-saving features.
A person’s hand is adjusting a digital thermostat mounted on a white wall, displaying a temperature of 28.6°C and other control options on its touchscreen.
A toggle switch graphic with OFF at the top and ON at the bottom. The switch is positioned toward OFF. The image uses white outlines on a light gray background.
Smart

Remote Automation & Control

Not just Smart, but Wise. Use Shelly's Pro devices to switch on and off at the right moment. Dynamically adjust the operations of inverters in your PV system to respond to real-time conditions, using Shelly scripting and scenes.
A toggle switch graphic with OFF at the top and ON at the bottom. The switch is positioned toward OFF. The image uses white outlines on a light gray background.
A woman in a suit works at a desk with two large computer monitors displaying graphs, charts, and data in a modern control room, with several other people working in the background.
A simple outline of a shield with an open padlock in the center, symbolizing security or unlocked access. The image is in grayscale.

Industry Grade Security

Shelly's ecosystem supports mTLS for MQTT, HTTP, secure outbound WebSockets and more. Its industry-grade security allows for direct connections to your cloud infrastructure, reducing the cost of deploying complex networks and VPNs.
A simple outline of a shield with an open padlock in the center, symbolizing security or unlocked access. The image is in grayscale.
A person holds a tablet displaying data, monitoring industrial machines in a bright, modern factory with blue tones and advanced equipment in the background.
A simple, light gray, stylized computer chip or microprocessor icon with a square center and small rectangular lines extending outward on each side, representing electronic circuitry.
Virtual Components & Scripting

Extensibility

Expand the built-in functionality of Shelly devices, by creating additional device logic with scripting and exposing this logic by Virtual Components.
A simple, light gray, stylized computer chip or microprocessor icon with a square center and small rectangular lines extending outward on each side, representing electronic circuitry.

Monitor & Control
your Photovoltaic System or Professional Automated installation everywhere you go -
  totally free!

Home Automation

Maximize your energy efficiency


With Shelly, you can monitor both how much energy your appliances consume and how much your photovoltaic system produces. When your solar panels are generating more energy than you're using, Shelly allows you to turn on appliances like water heaters to use up the excess energy, preventing waste. By optimizing your solar energy usage in real time, you can maximize efficiency and save on electricity costs.
Business Automation

Data-Driven Energy Management


For businesses looking to invest in photovoltaics, Shelly provides detailed consumption monitoring, helping you understand your energy needs. By tracking how much energy your business consumes, Shelly helps you make informed decisions about the size of your photovoltaic system and whether to invest in energy storage. Use real-time data to plan wisely and optimize your solar investment for long-term cost savings.
Industrial Automation

Optimize Energy Selling


In industrial settings, Shelly helps you monitor and manage your energy production for selling on the energy market.

With real-time tracking and insights, you can make strategic decisions based on day-ahead prices, ensuring you sell your energy at the best rates.
Rows of solar panels and wind turbines are set on a green hillside, with mountains and trees in the background under a partly cloudy sky, illustrating renewable energy in a natural landscape.
A man in a white shirt and glasses works on a laptop in a modern server room with glowing server racks in the background.
Energy efficient house with Solar Panels on the roof
Energy efficient house with Solar Panels on the roof
Home Automation

Maximize your energy efficiency


With Shelly, you can monitor both how much energy your appliances consume and how much your photovoltaic system produces. When your solar panels are generating more energy than you're using, Shelly allows you to turn on appliances like water heaters to use up the excess energy, preventing waste. By optimizing your solar energy usage in real time, you can maximize efficiency and save on electricity costs.
A man in a white shirt and glasses works on a laptop in a modern server room with glowing server racks in the background.
Business Automation

Data-Driven Energy Management


For businesses looking to invest in photovoltaics, Shelly provides detailed consumption monitoring, helping you understand your energy needs. By tracking how much energy your business consumes, Shelly helps you make informed decisions about the size of your photovoltaic system and whether to invest in energy storage. Use real-time data to plan wisely and optimize your solar investment for long-term cost savings.
Rows of solar panels and wind turbines are set on a green hillside, with mountains and trees in the background under a partly cloudy sky, illustrating renewable energy in a natural landscape.
Industrial Automation

Optimize Energy Selling


In industrial settings, Shelly helps you monitor and manage your energy production for selling on the energy market.

With real-time tracking and insights, you can make strategic decisions based on day-ahead prices, ensuring you sell your energy at the best rates.

Shop Shelly Pro Line

Browse Shelly Professional line devices for DIN-rail with 5 year warranty.

Shelly Pro RGBWW PM - Shelly USA

Shelly Pro RGBWW PM

Regular price $63.99
Sale price $63.99 Regular price
Our first DIN-rail mountable, five-channel smart light controller for managing adjustable white channels (CCT) and 5 LED strips independently. Featuring power measurement that allows real-time trac...
LED strips
Power measurement
Dimming
Color
Shelly Pro 3 - Relay Switches - Shelly USA

Shelly Pro 3

Regular price $76.99
Sale price $76.99 Regular price
3-channel relay with potential-free outputs, supporting a total of 48A for professional automation of residentials or commercial use. Control temperature or lights automation in large spaces.
Lights
Appliances
Valves
Heating & Cooling
Shelly Pro 4PM - Relay Switches - Shelly USA

Shelly Pro 4PM

Regular price $106.99
Sale price $106.99 Regular price
Professional 4-channel DIN rail smart switch with power metering, supporting up to 16A per channel. Control and monitor the consumption for each channel separately.
Lights
Heating & Cooling
Appliances
Load shedding
Shelly Pro 3EM-400 - Energy Meters - Shelly USA

Shelly Pro 3EM-400

Regular price $247.99
Sale price $247.99 Regular price
Shelly Pro 3EM-400 is a DIN rail mountable three-phase energy meter. Enhanced with all the gen2 firmware flexibility and LAN connectivity, it provides professional integrators with additional optio...
Variant: 400A
Shelly Pro Dual Cover / Shutter PM - Relay Switches - Shelly USA

Shelly Pro Dual Cover / Shutter PM

Regular price $106.99
Sale price $106.99 Regular price
Dual-cover smart controller with integrated precise power meters - control and monitor the consumption of each cover separately. Perfect for automation of roller shutters, curtains, gates, etc.
Covers & Blinds
Power monitoring
Shelly Pro 1 - Relay Switches - Shelly USA

Shelly Pro 1

Regular price $54.49
Sale price $54.49 Regular price
1-phase, 1-channel relay with potential-free outputs (dry contacts), supporting up to 16A for professional lights and appliance automation for residential or commercial use.
Lights
Appliances
Irrigation
Pool automation
Water manifolds
Shelly Pro 2PM - Relay Switches - Shelly USA

Shelly Pro 2PM

Regular price $89.49
Sale price $89.49 Regular price
1-phase, 2-channel relay with two integrated precise power meters that allow customers to control and monitor the consumption for each channel separately. Suitable for roller shutter automation.
Shelly Pro 3EM Switch Add-on - Relay Switches - Shelly USA

Shelly Pro 3EM Switch Add-on

Regular price $22.99
Sale price $22.99 Regular price
Galvanically isolated switch designed to expand the capabilities of the Shelly Pro 3EM device. Easily control electrical devices with greater flexibility and control over your consumption.
Contactor control
Shelly LAN Switch - Accessories & Merchandise - Shelly USA

Shelly LAN Switch

Regular price $56.49
Sale price $56.49 Regular price
DIN-mountable Ethernet switch with 5 RJ45 ports, engineered for reliability and performance. Ensures a consistent and stable direct network connection to your devices.
Shelly PRO EM-50 - Energy Meters - Shelly USA

Shelly PRO EM-50

Regular price $81.49
Sale price $81.49 Regular price
1-Phase Energy Meter with an integrated switch for contactor control. Control and monitor the consumption of any home appliances, electric circuits and office equipment.
Energy saving
Power monitoring
PV systems
Shelly Wave Pro 1PM - Relay Switches - Shelly USA

Shelly Wave Pro 1PM

Regular price $80.49
Sale price $80.49 Regular price
Professional 1-channel DIN rail Z-Wave smart switch, up to 15 A. Equipped with an integrated power meter, allowing you to measure power consumption of all automated lights or heavier appliances
Power monitoring
Appliances
Lights
Heating
Floor heating
Shelly Wave Pro 2 - Relay Switches - Shelly USA
Out of stock

Shelly Wave Pro 2

Regular price $76.99
Sale price $76.99 Regular price
2-channel DIN rail Z-Wave smart switch with dry contacts, supporting up to 25 A, designed for professional lights and appliance automation in residential or commercial use.
Lights
Appliances
Irrigation
Heating & Cooling
Pool automation
Shelly Wave Pro 1 US - Relay Switches - Shelly USA

Shelly Wave Pro 1 US

Regular price $65.99
Sale price $65.99 Regular price
1-channel DIN rail Z-Wave smart switch with dry contacts, 15 A capacity, for pro lighting/appliance automation in homes or businesses. Now with enhanced range and performance.
Lights
Heating & Cooling
Appliances
Door lock
Irrigation
Pool automation
Shelly Wave Pro 1PM US - Relay Switches - Shelly USA
Out of stock

Shelly Wave Pro 1PM US

Regular price $80.49
Sale price $80.49 Regular price
1-channel DIN rail Z-Wave smart switch with power metering for pro lighting and appliance automation in homes or businesses. Now features enhanced range and improved performance.
Lights
Power monitoring
Appliances
Heating & Cooling
Shelly Wave Pro 2 US - Relay Switches - Shelly USA

Shelly Wave Pro 2 US

Regular price $85.99
Sale price $85.99 Regular price
2-channel DIN rail Z-Wave smart switch with dry contacts, 25 A capacity, for pro lighting/appliance automation in homes or businesses. Now with enhanced range and performance.
Lights
Heating & Cooling
Appliances
Irrigation
Pool automation
Shelly Wave Pro 2PM US - Relay Switches - Shelly USA

Shelly Wave Pro 2PM US

Regular price $108.99
Sale price $108.99 Regular price
2-channel DIN rail Z-Wave smart switch with power metering for pro lighting and appliance automation in homes or businesses. Now features enhanced range and improved performance.
Lights
Power monitoring
Appliances
Heating & Cooling
Shelly Pro 1PM - Relay Switches - Shelly USA

Shelly Pro 1PM

Regular price $66.99
Sale price $66.99 Regular price
1-phase, 1-channel relay with an integrated power meter, which allows you to measure the precise power consumption of all automated lights or heavier appliances.
Shelly Pro 2 - Relay Switches - Shelly USA

Shelly Pro 2

Regular price $71.49
Sale price $71.49 Regular price
1-phase, 2-channel relay with potential-free outputs (dry contacts), supporting a total device maximum of 25A for professional lights and appliance automation
Lights
Appliances
Irrigation
Pool automation
Water manifolds
Shelly Pro 3EM - Energy Meters - Shelly USA

Shelly Pro 3EM

Regular price $128.99
Sale price $128.99 Regular price
Next-generation DIN-mountable 3-Phase Energy Meter Shelly Pro 3EM is a DIN rail mountable three-phase energy meter. Enhanced with all the gen2 firmware flexibility and LAN connectivity, it provide...
Variant: 120A

Business Solutions and Customer Projects from around the world

Smart Steambath Control

Daniel Ritter
The steam bath has been transformed into a fully automated, smart-controlled system powered by Shelly devices, MQTT, and ioBroker. It now manages temperature, ventilation, lighting,...
A modern, blue-lit shower room features a bench on the left, two rectangular wall panels on the right, and an open utility access panel revealing pipes and equipment above.

Smart Irrigation System

Steffen Berthold
🌱 Overview Steffen Berthold turned his love for travel — and self-professed “lazy gardening” — into the inspiration for a fully automated irrigation system. The...
A sunny balcony with several potted plants along the railing. Close-up images below show a pump, wires, and plumbing components attached to the balcony floor and wall.

Smart Home in a Village

Ulrich Wolff
Living in a somewhat remote house with a large plot of land comes with its own challenges — and opportunities. This project transformed the property...
Several solar panels are mounted on structures beside a grassy area and a dirt path. Water tanks and other equipment are visible nearby, and a field of green crops is in the background.

Smart PV surplus sharing with Shelly

Christian Volk
This project shows how Shelly devices can turn one photovoltaic (PV) installation into an energy-sharing network between two households. By linking the production from my...
A stylized logo with overlapping D shapes above the words Decentralizace, Digitalizace, Dekarbonizace and the acronym EDDC below, all in dark green on a light background.

Intelligent Living Room with a Hidden Desk

Christian Volk
VOCA showcases how Shelly devices can be used to bring intelligence and automation to energy management in homes and businesses. Their installation demonstrates a fully...
A home office setup in a wooden cabinet with open doors, featuring an ultrawide monitor displaying colorful lines, a keyboard, mouse, printer, and various electronics organized on shelves.

Bringing Home Automation to Your AI Assistant

Giorgio Guidi
Overview What if your AI assistant could do more than answer questions — what if it could control your entire smart home? This project demonstrates...
A graphic showing logos of Claude, Copilot, ChatGPT, and Gemini, with arrows pointing to Shelly Cloud and text reading Home Automation Into AI Agent. The ThinkasaDev logo is at the bottom. Blue gradient background.

Smart Washing Machine

Giorgio Guidi
Overview A simple DIY retrofit transforms a basic washing machine into a smart appliance. Using a Shelly 1PM and custom tutorial, the user now receives...
Diagram showing a washing machine connected to a Shelly smart relay, which is powered by an electrical plug and wirelessly connected to a smartphone displaying the Shelly app.

Smarter Sauna Control

Daniel Wipf
When the mechanical timer of a Harvia PC90 sauna failed, the goal wasn’t just to repair it — it was to rethink how the sauna...
Technical floor plan of a rectangular room with labeled measurements, two circular door swings, a stove, and highlighted electrical components labeled TRU COMPONENTS 1571909 and DS18B20 in red text.

Smart Meter Watch

Philip Zemen
We developed hardware that plugs into existing smart meters to capture real-time energy data. Energy communities use this data to deliver cheaper power, while a...
A power consumption monitor with a digital display showing -100 W is plugged into a power strip mounted on a wall. One socket on the strip is in use, and the rest are empty. A green light illuminates the monitor.

Invisible Movie Theater

Ondrej Letocha
Shelly USA

The project is about creating an "Invisible Movie Theater" using a projector, a white screen with an electric drive, and Shelly smart devices for control. 

Invisible Movie Theater

Smart Elevator

Nael Ghosheh‎
Shelly USA

The Shelly Plus Mini allows you to easily upgrade your elevator by enabling remote requests via phone or Bluetooth button, with added security features like disabling the elevator button using an NFC tag. 

Smart Elevator

Opening and closing house with Shelly

Franck Lardeur
Shelly USA

The concrete problem was the frequent trips back and forth to this house, which 
made it difficult to open and close the house.  In case of forgetfulness, we had to ask the neighbors to come by after we left.

Opening and closing house with Shelly

Smart Electric Car Charger

Mark Boyle‎
Shelly USA
I automated my EV charger using a Shelly 1 to control charging times based on my night-time tariff, optimizing energy use for my Nissan Leaf.
Smart Electric Car Charger

Heater Smart Switch

by Gerhard Müller
Shelly USA
To automate my home heating system, I installed a Shelly 1PM Mini Gen3 switch to control the gas boiler based on sensor data, reducing standby energy consumption.
Heater Smart Switch

Project Luma: Home Cinema

Luca Scaringella
Shelly USA
Luma is a fully automated home cinema that I built with my father, combining his construction skills with my technical expertise in software engineering, using Shelly components, a custom server, and app.
Project Luma: Home Cinema

RV Trailer As A Shelly Smart Home

Christian Hunziker
Shelly USA
It all started with the desire to monitor the temperature in the refrigerator while traveling and the first Shelly H&T. In the meantime, almost 30 Shelly products are in use and have turned it into a real "smart home on wheels".
RV Trailer As A Shelly Smart Home

Door Closed and Locked Monitoring with Shelly BLU Door Window

Beat Frei
Shelly USA
By adding a limit switch to the Shelly Blu Door/Window sensor, I enabled it to detect both closed and locked status. Now, you can check the door's security anytime via the Shelly app, ensuring peace of mind.
Door Closed and Locked Monitoring with Shelly BLU Door Window

Using Photovoltaic Energy for Water Heating 

Bence Harvan
Shelly USA
With Shelly devices, you can efficiently use excess photovoltaic energy to heat water in your home. The system directs surplus energy to the water heater, reducing grid dependence. This setup helps lower energy costs and promotes sustainability.
Using Photovoltaic Energy for Water Heating 

Smart Automation For A Windmill Villa With Pool

Nuno Vicente
Shelly USA
With Shelly I control pool systems, lights, and monitor water levels remotely for my holiday home. Sensors help manage temperature, humidity, and even notify me when the rat trap is triggered.
Smart Automation For A Windmill Villa With Pool
A laptop and smartphone display a smart home control dashboard, showing live room camera feeds, energy statistics, device settings, and weather information.
SHELLY APP

Shelly Smart Control is Free!

Download our free app to manage spaces, monitor energy, and track expenses. Upgrade to Premium for even more features!

Discover Shelly app

Integrations

Shelly devices are compatible with multiple protocols, such as MQTT, KNX, REST, HTTP and more!


On top. use your Shelly Devices with your preferred voice assistant like Alexa, Google Home, Android and iOS, or integrate it with IoT Home Automation Hubs and systems like Home Assistant, IoTBroker, Homey, Habitat and more!

A light blue, incomplete circular shape forming a speech bubble against a light gray background, resembling the Amazon Alexa logo.
Alexa
A minimalist house icon made of four lines in red, blue, yellow, and green, resembling the Google Home logo on a white background.
Google
Home
A blue house-shaped icon with a white tree-like circuit symbol in the center, resembling a branching network or technology diagram.
Home
Assistant
A blue rounded square icon with a white network or hub symbol in the center, consisting of a central circle connected by lines to five surrounding circles.
Smart
Things
A circular ring featuring a smooth gradient of colors, transitioning from red, orange, and yellow to green, cyan, blue, and purple in a seamless loop, with a white center.
Homey
A purple and white abstract design featuring curved, radiating lines and a quarter-circle shape, resembling a stylized broadcast or Wi-Fi signal icon.
MQTT
The image shows the KNX logo, with the letters KNX in green, grey, and blue. A curved green and blue line arches over the letters.
KNXNet
The word REST in large blue letters is centered between two green curly brackets on a light background.
REST
Webhooks
A black circle with a segment missing at the top, containing a red upward-pointing chevron or arrowhead in the center.
openHAB
A blue square logo featuring the white letters URC in the center, overlaid on a faint circular design.
URC
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Shelly Compatibility and Integrations