AC power Dimmer module 4 channels 10A-400V

The AC Dimmer is designed to regulate alternating current (AC) voltage, capable of handling currents up to 10A at 400V across 4 channels. While it can support high power, we recommend staying below the upper limit for optimal performance. This dimmer is ideal for controlling lamps, heating elements, fans, pumps, air purifiers, and other similar devices.

Dimmers are increasingly popular in smart home systems, providing smooth adjustments in light brightness for a comfortable ambiance. The module works best with filament lamps and medium to high-brightness LED lamps, though low-brightness LEDs may show inconsistent performance. Fluorescent (gas discharge) lamps do not support dimming.

The power section is isolated from the control section to protect the microcontroller from high currents. The dimmer is compatible with both 5V and 3.3V logic levels, ensuring easy connection to microcontrollers.

For Arduino projects, the dimmer is controlled via the RBDDimmer.h library, which handles external and process time interrupts. This simplifies coding, freeing up processing time for other tasks, and allows for controlling multiple dimmers from a single microcontroller. The RBDDimmer.h library and example codes are available on GitHub, with regular updates on our website.

The dimmer connects to Arduino controllers through two digital pins per channel: the Zero pin detects the AC Phase Null, triggering interrupts, while the DIM/PSM pin adjusts the current. The Zero pin must connect to specific microcontroller pins, depending on the model (e.g., Uno, Nano, Leonardo, or Mega), as it’s tied to the microcontroller’s interrupt function.