SSR 8 Channel MicroController/MCU Ac Programmable Light Dimmer Module Controller Board for Arduino Raspberry Compatible 50/60hz

Module contains 8 Triacs with zero-cross detector for programming the intensity of incandescent lamps, heating elements, AC LED dimmable bulbs or fan speed controlled through a micro-controller. 
Working AC voltage 80v to 240v.
Auto detect 50Hz or 60Hz.
Zero-Cross detection (with zero/cross output pin SYNC).
Compatible with any ARDUINO, RASPBERRY boards. 
Low voltage side and high voltage side is completely isolated. 
Dimensions of the PCB 131mm x 91mm (5.16inch x 3.58inch). Four mounting holes diameter 3.2mm (0.13inch). 
Connected LOAD current for each channel 5A long-term. 
NOT appropriate to change the brightness of fluorescent lamps !!! 
For inductive load controlling must be connected RC snubber 
Dimming control via firing angle method. 
Warning: This project deals with AC electricity which is dangerous if you don’t know how to treat it safely. 
You must treat electricity with caution!

AC LED Bulb video : https://youtu.be/oqRyJLcfOxo

8 Channel Halogen Bulbs Test : https://youtu.be/yeU55jsB7AM

Testing sketches (50Hz) : https://drive.google.com/open?id=0B6GJokXFb5oEdFZoajRDY1doZ1U

Question:

can you advise if unit 8Channel AC LED BULB DIMMER 110V 220V SMART HOME ARDUINO RASPBERRY PROGRAMMABLE is better please.Can you also confirm if I need the 8 Channel Multiplexer (74HC4051) to connect two units to Arduino. If this is better can you send me link to information please.

Thank you
Henri

Answer: Multiplexer hc4051 is designed for input. In your case, best solution is to use shift registers hc595. It need only 2 wires - data and clock.