Work at is supposed to. very nice little board and we use it to change speed of an AC motor in both 110-120v AC and 220-240v AC. It works fine and does exactly what we were looking for.

Thank you!

Daniel, automation electrical engineer.

Response from RF Simplicity | Oct. 3, 2017

Thanks Daniel!

James | April 22, 2016

It works!

For AC 60Hz/50Hz Dimmer/SSR Controller Board

It works very well controlling the brightness of a 400W (240V) halogen floodlight in PWM mode via an Arduino.
The maker was very helpful keeping me posted regarding expected delivery dates.

Edward | Jan. 17, 2016

Good product & support - but needs some extra in docs

For AC 60Hz/50Hz Dimmer/SSR Controller Board

The dimmer works on 980Hz.
Be CAREFULL when changing the freq of random pins!

So summary. to safe lots of time in search, trial&error:

Dimmer PWM mode only works on 980Hz pin;
UNO: D5, D6
YUN: D3, D11
MEGA: D4, D13

timer bits channel Arduino Yun Mega
timer0 8 A 6 11 13 980Hz delay(), millis() need this freq, etc.
timer0 8 B 5 3 4 980Hz delay(), millis() need this freq, etc.

Code
====
const int analogOutPin = 11;
pinMode( analogOutPin, OUTPUT);
analogWrite( analogOutPin, outputValue= 0...100 );

Tindie

RF Simplicity

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БЫСТРАЯ ДОСТАВКА, ЭЛЕМЕНТ, КАК ОПИСАНО, ВСЕ ОК, СПАСИБО

Really nice

Response from RF Simplicity | Oct. 3, 2017

It works!

Good product & support - but needs some extra in docs