AC Light Dimmer Module

AC Light Dimmer Module

The board can be used in applications where dimming of 110-220V AC power is required like dimming of bulb or fan. This Module contains a Triac triggering coupled with zero-cross detector mechanism for programming the intensity of incandescent lamps, LED dimmable bulbs, heating elements or fan speed controlled through a micro-controller. This Module compatible with any MCU, Arduino or Raspberry boards.


·       Working voltage from 110v to 240v.

·       Load AC current: 0.1A to 3A

·       Compatible for 50Hz and 60Hz AC LINE
Auto detects 50Hz or 60Hz.

·       Device power supply - 5V or 3.3V 

·       PWM input signal up to 10 kHz 
Zero-Cross detection (with zero/cross output pin Z-C)

·       Onboard Power and output indicate LED, s

·       On-board Snubber circuit for triac protection, when you're controlling the inductive load 

·       Low voltage side and high voltage side is completely isolated

·       PCB Dimensions: 42.5x1.5x70.5mm

·       Module Weight: 23g.


This circuit is attached to a 110-240 Voltage. Do not build this if you are not confident about what you are doing. Unplug it before coming even close to the PCB. The cooling plate of the Triac is attached to the mains. Do not touch it while in operation. Put it in a proper enclosure/container.

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