Shelly Dimmer Gen3

Shelly Dimmer Gen3 – Smart Single-Channel Dimming Controller with Power Measurement

Take full control of your home lighting with the Shelly Dimmer Gen3. This advanced single-channel dimming controller is designed for precision, flexibility, and seamless integration into your smart home system. With or without a neutral wire*, the Shelly Dimmer Gen3 adapts to your setup and ensures reliable dimming performance for a wide range of bulbs.

No hub is required — just connect directly to your Wi-Fi network, or use Bluetooth for easy setup through the Shelly Cloud App.

Key Features

• Works with or without a neutral wire*

• Power monitoring for precise consumption tracking (when neutral is connected)

• Night Mode for automatic brightness adjustments during specific hours

• Wi-Fi operated (no hub required)

• Built-in Bluetooth gateway for bridging Shelly BLU devices

• Flexible input control with existing single or dual button switches

• Smart schedules based on custom times or sunrise/sunset

• Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS, and custom certificates

• Compatible with Alexa, Google Home, Home Assistant, KNXnet/IP, and more

• Improved ESP-Shelly-C3 processor with 8 MB memory for faster performance and better efficiency

• Durable terminals and extended Wi-Fi range

Supported Load Types

• Dimmable LED lamps: up to 150W

• Incandescent bulbs: up to 200W

• Halogen lamps: up to 200W

• Iron-core transformer with low-voltage incandescent lamps: up to 200VA

• Dimmable constant-current electronic transformers: up to 200W

Technical Specifications

Power

• Supply: 220–240V~ 50Hz

• Consumption: < 1.5W

• Works without neutral: Yes

• Minimum load without neutral (no Bypass): 20W

• Dimming type: Trailing edge

• Max output power: 200W

• External protection: 16A (B or C curve, 6kA interrupting rating, Energy limiting class 3)

Environment

• Operating temperature: -20°C to 40°C / -5°F to 105°F

• Humidity: 30% to 70% RH

Measurement

• Voltmeter range: 180V–240V AC (±5% with neutral)

• Ammeter range: 0–3A (±5% with neutral)

Connectivity

• Wi-Fi protocol: 802.11 b/g/n @ 2.4 GHz

• Wi-Fi range: up to 50m outdoors / 30m indoors (depending on construction)

• Bluetooth protocol: 4.2

• Bluetooth range: up to 30m outdoors / 10m indoors

Dimensions

• Size (H x W x L): 38 x 42.5 x 16.5 mm (1.50 x 1.67 x 0.65 in)

Notes

• *Bypass is required when used without neutral and load is under 20W.

• Constant-voltage dimmable drivers are not supported.