Dimming without a neutral line
Shelly Dimmer 2 is designed to work with all electrical installations worldwide, including those without a neutral line. It offers full dimming functionalities for halogen lights, dimmable LEDs, and ferromagnetic transformers.
Features
- No HUB required.
- Dimming without a neutral line.
- Turn ON/OFF or use the dimming function to set the brightness to your preferred intensity,
- Integrated internal temperature sensor for overheating protection.
- Designed to fit in most standard electrical boxes and switches.
- It can be integrated to work with all other Shelly devices.
- Compatible with Android, iOS, Amazon Alexa, Google Assistant, and home automation servers using MQTT, CoAP, and REST API.
- Easily make your Arduino project live and usable in your automation project.
Specification
| POWER | |
| Power supply AC | 110-230V ±10%, 50/60Hz |
| SPECIAL FUNCTIONS | |
| Device temperature protection | Yes; 95°C |
| Overload protection | Yes |
| Power measurement | Yes |
| Dimming | Yes |
| Operational current: | 0.1-1.1 A |
| Dimmable LED | 50-200VA / 10W – 200W |
| Incandescent and halogen light sources | 10-220W |
| Working without a neutral line | Yes |
| FEATURES | |
| Colour changing | No |
| Predefined effects | Yes |
| Channels | 1 Channel |
| Operational temperature | 0 to + 40°C |
| Device power consumption | < 1 W |
| Intelligent On/Off | Yes |
| Local and remote control | Yes |
| Sunrise/Sunset | Yes |
| Weekly Schedule | Yes |
| UL Listed option | No |
| CONNECTIVITY | |
| Wireless/WiFi Protocol | 802.11 b/g/n |
| Radiofrequency | 2400 – 2500 MHz |
| Range | up to 50 m outdoors and up to 30 m indoors (depending on the building materials) |
| DIMENSIONS | |
| Size | 42mm x 36mm x 14 mm |
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Wiring diagrams
*When using the device without neutral, Shelly Dimmer 2 requires at least 20W @ 240 VAC of power consumption to operate. If the connected light has a smaller power consumption, then Shelly Bypass is needed for the device to work.
Use cases
Lighting control
Install Shelly Dimmer to control lights at home using a smartphone or voice commands. Â When you are reading your favorite book in the evening, picking a stronger light will ease your eyes. Also, dimming the lights during movie nights has never been easier!





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