Shelly Dimmer Gen3 (the Device) is a single-channel smart dimming controller that allows remote control of dimmable lights and drivers through a mobile phone, tablet, PC, or home automation system. It works standalone in a local Wi-Fi network or via cloud home automation services. The device can be accessed, controlled, and monitored remotely from anywhere with internet connectivity. It features an embedded Web Interface for configuration and control, and can function as a trailing edge dimmer switch, with or without a neutral wire.
Main Features
No Neutral Required: Operates without a neutral wire.
Bypass Support: Recommended when load is under 20W or when light glows faintly when off.
Group Lighting: Allows grouped control of identical lights (same model and consumption).
Bluetooth Connectivity: Enables short-range communication with other Bluetooth devices.
BLE Gateway: Bridges BLE and Wi-Fi devices for seamless automation.
Wi-Fi Enabled: Connects to local Wi-Fi for remote control.
Wi-Fi Range Extender: Extends network coverage by retransmitting signal.
Scripting: Supports custom automation scripts.
Basic & Advanced Schedules: Create routines with precise brightness and timing controls.
Auto On/Off Timers: Set automatic power cycles.
Local Actions & Webhooks: Create local automations and trigger URL-based events.
Compatibility: Works with 3rd party systems – Google Home, Alexa, SmartThings, etc.
No Hub Needed: Works independently via Shelly Smart Control app or local web UI.
Power Measurement: Displays voltage (V), current (A), and consumption (W) when used with neutral.
Night Mode: Set specific brightness for nighttime hours.
Min/Max Brightness & Transition Control: Smooth and precise dimming with configurable fade duration.
Button Control Options: Supports one or two-button dimming setups.
Automatic Dimming Calibration: Ensures smooth dimming across the entire range.
Factory Reset via Switch/Button: 5 toggles within 60 seconds after power-on resets the device.
KNX Support: Supports KNXnet/IP communication protocol.
Use Cases
Retrofit dimming control without neutral wire using existing switches.
Control brightness for perfect ambience throughout the day.
Automate brightness with sunrise/sunset-based smart schedules.
Activate night mode for reduced brightness at night.
Integrate with Home Assistant, Alexa, Google Home, and SmartThings.
Enable automatic lighting with motion sensors like Shelly Motion.
Inputs: 2 switch/button inputs on screw terminals (S1, S2), 3 power supply inputs (1N, 2L)
Outputs: Internally bridged outputs on screw terminals (O)
Add-on Interface: Not supported
Connectivity
Wi-Fi (2.4 GHz 802.11 b/g/n)
Bluetooth 4.2
Safety Functions
Overheating Protection
Overpower Protection*
Overvoltage / Undervoltage Protection*
Overcurrent Protection
* These protections work only when used with Neutral
Supported Load Types
Dimmable LED lamps: up to 150 W
Incandescent bulbs: up to 200 W
Halogen lamps: up to 200 W
Iron-core transformers: up to 200 VA
Dimmable electronic transformers: up to 200 W
User Interface
Inputs: One control button for pairing and factory reset.
Outputs: LED indication showing connection and status states (AP, Wi-Fi, Cloud, OTA updates).
Specifications
Physical
Size (HxWxD):
38×42.5×16.5 mm / 1.50×1.67×0.65 in
Weight:
24.3 g / 0.86 oz
Mounting:
In-wall
Shell Material:
Plastic (Lime with Black print)
Environmental
Working Temperature:
-20 oC to 40 oC / -5 oF to 105 oF
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 (no neutral, no bypass):
20 W
Output Ratings
Max Output Power:
200 W
Radio
Wi-Fi Protocol:
802.11 b/g/n, 2.4 GHz
Range:
Up to 30 m indoors / 50 m outdoors
Bluetooth:
v4.2 (10 m indoors / 30 m outdoors)
Microcontroller Unit
CPU:
ESP32 C3 + STM32 G051
Flash:
8 MB
Firmware Capabilities
Schedules:
20
Webhooks (URL Actions):
20 with 5 URLs each
Scripting:
Yes
MQTT:
Yes
Advanced Schedules:
Yes
KVS (Key-Value Store):
Yes
* Precise measurement is possible only when used with Neutral.
Specifications
Warranty & Returns
This product is sold by a third-party seller and they are responsible for their product, the content of their listing and any exchanges or returns of their product.
All products sold by third-parties are subject to guarantees that cannot be excluded under the Consumer Guarantees Act.
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