AC Light lamp dimming LED lamp and motor Dimmer Module, 1 Channel – 8A


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Approx Restocking Date: 25 to 30 Days
SKU: 1020730
  1. High-quality BTA16-600B TRIAC
  2. AC Voltage: 220V/110V; 50/60Hz
  3. Rated Current: 8A
  4. Logic: 3.3V/5V
  5. Peak Current: 16A
  6. Dimensions (L x W x H) mm: 55 x 22 x 32
  7. Weight: 18 gm


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Category: Buck Converter

The AC Dimmer is designed to control the alternating current voltage, which can transfer current up to 400V/8А. In most cases, Dimmer is used to turning the power ON/OFF for lamps or heating elements, it can also be used in fans, pumps, air cleaners, e.t.c.

Lately, Dimmer has become an often-used decision for smart home systems. For example, when you need to smoothly change the light brightness. The lamp is slowly turning ON or OFF, creating a comfortable atmosphere. Dimmer works most effectively with filament lamps. It’s less stable with low brightness dimmable LED lamps, but with moderate and high brightness it will perform a solid job. Note that luminescent lamps (gas discharge lamps) do not support dimming.

The power of the dimmer is isolated from the control part, to exclude the possibility of high current disruption to a microcontroller. The logical level is tolerant to 5V and 3.3V, therefore it can be connected to the microcontroller with 5V and 3.3V level logic.

In Arduino, a dimmer is controlled with RBDdimmer.h library, which uses external interrupts and process time interrupts. It simplifies the code writing and gives more processing time for the main code. This is why you can control multiple Dimmers from one microcontroller.

You can download RBDDimmer.h library and a few examples in «Documents» or on GitHub. We are constantly updating our library, so we recommend checking for website updates or subscribe to our newsletter.

Dimmer is connected to Arduino controllers via two digital pins. First (Zero) to control the passing of Phase Null of AC, which is used to initiate the interrupt signal. Second (DIM/PSM) to control (dim) current.

Note that Zero requires connection to designated microcontroller pins (which are different depending on the model of Uno, Nano, Leonardo, Mega), since it is tied to microcontroller interrupts.


  1. Single-channel AC dimmer Module.
  2. High-quality BTA16-600B TRIAC
  3. For indoor and outdoor use.
  4. Peak Current 16A

Library for Arduino:

Dimmer Library (RBDdimmer.h):

Package Includes:

1 x AC Light lamp dimming LED lamp and motor Dimmer Module, 1 Channel – 5A

SKU: 1020730 Category:
Input Voltage (VAC)

220V/110V; 50/60Hz

Rated Current (A)


Logic Voltage (V)


Peak Current (A)


Dimensions (mm)

55 x 22 x 32

Weight (g):


Shipping Weight 0.07 kg
Shipping Dimensions 7 × 5 × 3 cm
15 Days Warranty

This item is covered with a standard warranty of 15 days from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects. Replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Questions and answers of the customers

  1. 0 votes
    Q Can this be used to control Fan speed using Node MCU or Arduino or RPi? answer now
    Asked by ashish81sharma on January 10, 2022 5:28 pm


    No a dimmer switch is not recomme... Read more

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Country Of Origin: China