Shelly Dimmer Gen4 Smart Dimming Controller

Shelly Dimmer Gen4 Smart Dimming Controller The Shelly Dimmer Gen4 is a compact single-channel smart dimming controller designed for dimmable lighting in residential and commercial environments. Supporting Wi-Fi, Bluetooth, Zigbee and Matter, it provides flexible smart-home integration while allowing precise brightness control, schedules, scenes and automation. It can operate with or without a neutral wire, making it suitable for both modern and retrofit lighting installations. Key Features: Single-channel smart dimming controller Trailing-edge dimming technology Works with or without neutral wire Wi-Fi 802.11b/g/n/ax connectivity Bluetooth 5.0 Zigbee support with repeater functionality Matter certified Supports dimmable LED lamps up to 150W Supports incandescent and halogen lamps up to 200W Supports dimmable electronic transformers up to 200W Automatic dimming calibration Adjustable minimum and maximum brightness Adjustable fade rate and transition time Supports schedules, scenes, scripting and MQTT Compact in-wall installation design Features Smooth Smart Dimming Control The Shelly Dimmer Gen4 provides precise trailing-edge dimming for compatible lighting loads. Brightness levels, minimum and maximum output, fade rate and transition duration can all be adjusted to suit different lighting environments and user preferences. Works With or Without Neutral The device can be installed in electrical systems with or without a neutral wire, helping simplify retrofit installations. When used without neutral and the connected load is below 20W, a compatible Shelly Bypass for Dimmer is required. Multi-Protocol Connectivity Wi-Fi, Bluetooth and Zigbee connectivity provides flexible integration with different automation ecosystems. Matter certification allows the dimmer to work with compatible Matter platforms including Apple Home, Google Home, Amazon Alexa, Samsung SmartThings and Home Assistant. Automatic Calibration Automatic dimming calibration helps optimise the control range for the connected lighting load. Calibration is performed after initial setup, a factory reset or whenever the connected load changes. Flexible Physical Controls Two switch or button inputs allow the dimmer to work with existing wall switches or push buttons. Single-button and dual-button dimming configurations are supported, along with double-press and long-press actions. Smart Schedules and Automation Up to 20 schedules can be configured for automated lighting control. The device also supports webhooks, MQTT, scripting, local web control and KNXnet/IP communication for more advanced smart-home and building automation workflows. Night Mode and Scene Control Night Mode can automatically limit brightness during selected hours, while scenes and automation rules can adjust lighting based on time, motion or other connected Shelly devices. Shelly Bypass for Dimmer is required when operating without neutral and the connected load is below 20W. Supported maximum load depends on the lighting technology being used. Installation on mains-voltage circuits should be performed by a qualified electrician. Technical Specifications: Specification Details Brand Shelly Model Shelly Dimmer Gen4 Device Model S4DM-0A101WWL Product Type Smart Dimming Controller Channels 1 Dimming Type Trailing Edge Power Supply 220-240V AC, 50Hz Neutral Required No Power Consumption < 1.5W Maximum Output Power 200W Maximum Output Current 0.85A Dimmable LED Load Up to 150W Incandescent Load Up to 200W Halogen Load Up to 200W Electronic Transformer Load Up to 200W Iron-Core Transformer Load Up to 200VA Minimum Load Without Neutral 20W without Bypass Wi-Fi 802.11b/g/n/ax Bluetooth Bluetooth 5.0 Zigbee IEEE 802.15.4 / Repeater Support Matter Certified Inputs 2 x Switch / Button Inputs Internal Temperature Sensor Yes Schedules Up to 20 MQTT Supported Scripting Supported Operating Temperature -20°C to 40°C Dimensions 38.5 x 43.5 x 17mm Weight 24.3g Colour Lime Green Package Contents Shelly Dimmer Gen4 Smart Dimming Controller User / Safety Documentation Choose the Shelly Dimmer Gen4 for precise smart lighting control, flexible no-neutral installation, Matter-certified multi-protocol connectivity and advanced scheduling, scene and automation features in a compact in-wall dimming solution.