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Shelly

Shelly Dimmer Gen4 US UL-Certified – Smart Wi-Fi, Zigbee & Matter Dimmer Controller (Open Box)

Shelly Dimmer Gen4 US UL-Certified – Smart Wi-Fi, Zigbee & Matter Dimmer Controller (Open Box)

Dimmer Gen4 US_OB_AN

Condition: Open Box

Professionally inspected and tested by Digital Bay Tech to ensure proper operation and cosmetic condition. Final sale. No returns or exchanges.
Open Box units may include manufacturer warranty when applicable and/or a Digital Bay Tech limited replacement warranty for manufacturing defects.
See warranty details below.

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$34.99 USD
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The Shelly Dimmer Gen4 US UL-Certified is a next-generation smart dimming controller designed to bring advanced lighting automation to virtually any home or commercial space.

Built with Shelly’s latest Gen4 platform, it supports Wi-Fi, Bluetooth, Zigbee, and Matter, giving you maximum flexibility when integrating into existing or future smart home systems.

Designed to fit behind standard wall switches, the Shelly Dimmer Gen4 allows you to upgrade traditional lighting into fully smart dimmable lighting without replacing your existing switches or changing your wiring setup.

The device supports a wide range of dimmable lighting types, including:

  • Dimmable LED lights
  • Incandescent bulbs
  • Halogen lighting
  • Electronic transformers
  • Low-voltage lighting systems

With support for Matter, the Shelly Dimmer Gen4 integrates seamlessly with:

  • Apple HomeKit
  • Amazon Alexa
  • Google Home
  • Samsung SmartThings
  • Home Assistant
  • Other Matter-compatible ecosystems

Advanced features such as night mode, fade control, minimum and maximum brightness adjustment, smart schedules, and motion-triggered automation provide precise lighting control and improved comfort.

Its compact design, UL certification, and multiprotocol connectivity make it an ideal solution for homeowners, smart home professionals, and lighting automation projects.

Why Shelly Dimmer Gen4?

Multiprotocol smart dimming built for modern homes

The Shelly Dimmer Gen4 combines the flexibility of Wi-Fi, Zigbee, Bluetooth, and Matter into one compact smart dimmer controller.

Unlike traditional smart dimmers limited to a single ecosystem, the Gen4 platform allows you to choose the protocol that best fits your installation today while remaining flexible for future upgrades.

Its compact retrofit design installs behind existing switches, making it easy to modernize lighting systems without replacing wall hardware.

With advanced dimming customization, smart schedules, motion automation, and Matter support, the Shelly Dimmer Gen4 delivers professional-grade smart lighting control for virtually any environment.

Key Features

  • Multiprotocol connectivity: Wi-Fi, Bluetooth, Zigbee, and Matter
  • Matter-certified for broad smart home compatibility
  • UL-Certified for the US market
  • Fits behind existing wall switches
  • Supports dimmable LED, incandescent, halogen, and transformer-based lighting
  • Smart schedules and automation scenes
  • Adjustable minimum and maximum brightness
  • Adjustable fade and transition duration
  • Motion-triggered lighting automation
  • Bluetooth gateway functionality
  • Works with Home Assistant, Alexa, Google Home, Apple HomeKit, and SmartThings
  • KNXnet/IP support
  • No hub required when using Wi-Fi mode

Typically Used For

  • Smart lighting upgrades
  • Dimmable LED lighting
  • Retrofit smart homes
  • Motion-triggered lighting
  • Home automation systems
  • Smart bedrooms and living rooms
View full details

Gen4 devices

Experience next-level smart home automation with Shelly Gen4 novelties.
Each Gen4 device offers multi-protocol connectivity, featuring Wi-Fi, Bluetooth, Zigbee, and Matter.
Choose your connection and set up your Shelly device to work with your preferred smart home network in no time.

Common Use Cases

  • Retrofit Existing Lighting Without Rewiring

    Install the Shelly Dimmer Gen4 behind existing switches to add smart dimming without replacing wall hardware.

  • Matter Smart Home Integration

    Integrate lighting into Apple HomeKit, Alexa, Google Home, SmartThings, or Home Assistant using Matter support.

  • Smart Ambient Lighting

    Create customized brightness levels for movie nights, dining areas, bedrooms, or relaxation spaces.

  • Motion-Activated Lighting

    Pair with Shelly motion sensors to automatically turn lights on when movement is detected.

  • Scheduled Lighting Automation

    Automatically adjust brightness levels based on schedules, sunrise, or sunset.

  • Energy-Efficient Smart Dimming

    Reduce energy usage by dimming lights to optimal brightness levels throughout the day.

Functionalities

  • Multi-protocol connectivity

    Wi-Fi, Bluetooth, or Zigbee - choose what fits your setup best.

  • Night Mode

    Create comfortable ambient lighting and automatically adjust to your predefined brightness during specific hours of the day.

  • Min/max brightness & fade rate

    Adjust brightness levels and transition speeds for more precise control.

  • Smart schedules

    Set schedules based on your routine or sync with sunrise and sunset for adaptive lighting.

  • Motion-triggered lighting

    Pair with Shelly BLU Motion to automatically switch on lights when movement is detected.

  • Flexible input control

    Use it with your existing switches and/or buttons for a fast and convenient control.

Frequently Asked Questions

Does the Shelly Dimmer Gen4 require a neutral wire?

Installation requirements depend on the specific lighting setup and load type. Always review the wiring documentation before installation.

Does Shelly Dimmer Gen4 support Matter?

Yes. The device supports Matter integration, allowing compatibility with major smart home ecosystems.

Can I use this with Apple HomeKit?

Yes. Through Matter support, the Shelly Dimmer Gen4 can integrate with Apple HomeKit.

Does it work with dimmable LED bulbs?

Yes. It supports a wide range of dimmable LED lights as well as incandescent and halogen bulbs.

Does Shelly Dimmer Gen4 require a hub?

No hub is required when using Wi-Fi mode. However, Zigbee and Matter configurations may require compatible ecosystem controllers depending on your setup.

No hub required, Universally compatible

Shelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed with Wi-Fi Protocol.(*)
Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system.

(*) Platform app / Hub required when used with Zigbee / Matter

Shelly App
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms Shelly compatible platforms

No hub required, Universally compatible

Shelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed with Wi-Fi Protocol.(*)
Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system.

(*) Platform app / Hub required when used with Zigbee / Matter

Shelly App
Shelly compatible platforms
Shelly compatible platforms
Shelly compatible platforms
Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms
Shelly compatible platforms Shelly compatible platforms

Warranty

New Products

  • USA Pro Market Manufacturer Warranty: Lifetime manufacturer warranty (only if installed by a professional within USA) when purchased at Digital Bay Tech.

  • Retail Standard Manufacturer Warranty (included in purchase price): 2, 3 or 5 years manufacturer warranty covers only the hardware (corpus, mechanics, and display, if any) and does not cover consumables (battery) and accessories insofar as these are subject to exhaustion (decrease of their useful life) depending on the intensity of their use. Device malfunctions are only covered when device is used as described conditions within user manual (max loads, proper installation, etc.). Please check refund policy for further details.
  • Gen 1: 2 years.
  • Plus, Gen3, Gen4, Wave: 3 years.
  • Pro Line: 5 years.

Special Notes

  • Do It Yourself: Devices are technically user-installable in many locales, nevertheless consulting a licensed electrician to install shelly components is recommended; in addition to being licensed to work with electrical devices, they are also familiar with local building codes and regulations to keep your safety.
  • Manufacturer's Safety note: Each Shelly device generates heat under load. Do not combine two or more Shelly devices stacked on top of or beside each other in a confined space. There must be a minimum distance of 0.4 inch / 1 cm between them to allow for airflow.

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