Overview

Shelly Dimmer Gen3: Smart Dimming Control for Your Home Lighting
Shelly Dimmer Gen3 is a versatile smart dimming controller designed for dimmable lights and drivers. Its compact in-wall design allows installation without a neutral wire, making it ideal for retrofitting existing lighting systems. The device supports trailing edge dimming, accommodates up to 200 W of output power, and integrates seamlessly with Wi-Fi and Bluetooth networks.

Description

This smart dimmer lets you control your lighting remotely via the Shelly app, voice assistants, or automated schedules. Compatible with LED, incandescent, halogen, and low-voltage transformers, it provides overload and temperature protection. With its advanced processor and expanded memory, Shelly Dimmer Gen3 ensures smooth performance, reliable operation, and easy integration with other smart home devices.

Features

Connect and Control with Wi-Fi and Bluetooth
Shelly Dimmer Gen3 connects directly to your Wi-Fi network without requiring a hub. Bluetooth support allows the device to act as a gateway for additional smart devices, giving you flexible control options for your lighting setup.

Install Without Neutral Wire
No neutral wireYes No problem. Shelly Dimmer Gen3 functions fully without one. For loads under 20 W, a bypass is required. This feature makes it simple to upgrade your lighting without rewiring or replacing your current switches.

Supported Lighting Types

• Dimmable LED lamps: up to 150 W
• Incandescent bulbs: up to 200 W
• Halogen lamps: up to 200 W
• Iron-core transformers with low-voltage lamps: up to 200 VA
• Dimmable electronic transformers: up to 200 W

Easy Control Options

• Use existing switches or buttons for fast manual control
• Remote control via the Shelly app and voice assistants
• Set smart schedules or scenes to automate lighting
• Night mode provides softer illumination during late hours

Practical Lighting Solutions

Effortless Retrofit for Existing Homes
Upgrade your lighting without major electrical work. Shelly Dimmer Gen3 integrates with your existing setup, providing smart dimming and app control while preserving your current switches.

Custom Schedules for Daily Life
Automate your lighting to match your routines. Lights can gradually brighten in the morning or dim in the evening, enhancing energy efficiency and creating a comfortable ambiance throughout the day.

Night Mode for Peaceful Nights
Enjoy soft, dimmed lighting during late-night hours. Night mode ensures your lights stay gentle, allowing you to move around safely without disrupting sleep.

Quick Dimming with One Touch
Control your lights instantly with a single or double press. Adjust brightness levels on the fly without opening an app, making it convenient to set the mood or fine-tune lighting for any activity.

Next-Generation Gen3 Technology

Ready for Matter Upgrade
Shelly Dimmer Gen3 is future-proofed for Matter smart home integration. Its doubled memory ensures smooth updates, unlocking new capabilities and enhanced connectivity with other devices.

Enhanced Performance and Reliability
Powered by Shelly's own ESP chip and 8MB memory, the Gen3 series delivers faster, smoother, and more efficient operation, providing dependable smart dimming for years to come.

Unified Smart Control
Use virtual components in the Shelly app to integrate non-Shelly devices. This allows you to manage all your smart devices from a single interface for a streamlined home automation experience.

Installation Notice
Installation of Shelly devices should be performed by a qualified electrician or authorized installer.

Terminals Overview

• L (x2): Two live terminals
• L: Live wire (220-240 V~)
• N: Neutral terminal
• N: Neutral wire
• O (x2): Output terminals to the load
• S1, S2: Switch/button input terminals for controlling lights

Specifications

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Specifications
Product Code	SHELLY DIMMER GEN3
Physical
Size (HxWxD)	38x42.5x16.5 mm / 1.50x1.67x0.65 inch
Weight	24.3 g / 0.86 oz
Screw terminals max torque	0.4 Nm / 3.5 lbin
Conductor cross section	0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules)
Conductor stripped length	5 to 6 mm / 0.20 to 0.24 in
Mounting	In-wall
Shell material	Plastic
Shell color	Shell: Lime
	Print: Black
Connector color	Black
Environmental
Ambient working temperature	-20 degreesC to 40 degreesC / -5 degreesF to 105 degreesF
Humidity	30 % to 70 % RH
Max. altitude	2000 m / 6562 ft
Electrical
Power supply	220-240 V~ 50 Hz
Power consumption	< 1.5 W
Neutral not needed	Yes
Min. load without neutral and without a Bypass	20 W
Dimming type	Trailing edge
External protection	16 A, tripping characteristic B or C
	6 kA interrupting rating
	Energy limiting class 3
Short circuit protection	Yes
Output circuits ratings
Max. output power	200 W
Sensors, meters
Voltmeter range (AC)	180 V - 240 V
Voltmeter accuracy	± 5 % (when used with neutral)
Ammeter range (AC)	0 A - 3 A
Ammeter accuracy	± 5 % (when used with neutral)
Internal-temperature sensor	Yes
	*Precise measurement is possible only when used with neutral.
Wi-Fi
Protocol	802.11 b/g/n
RF band	2412 - 2472 YesHz
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	4.2
RF band	2402 - 2480 MHz
Max. RF power	< 4 dBm
Range	Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
	(Depends on local conditions)
Microcontroller unit
CPU	ESP32 C3
	STM32 G051
Clock frequency	ESP32 C3: 40 Mhz
Flash	8 MB
Firmware capabilities
Schedules	20
Webhooks (URL actions)	20 with 5 URLs per hook...
Scripting	Yes
MQTT	Yes
Advanced schedules	Yes
KVS (Key-Value Store)	Yes