IRF520 is not logic level, it might work with a 5 volt MCU but you haven't said which Arduino you're using.
It needs 10V to be fully on...
Hi,
It makes it easier to show us the complete data;
It should work, as the actual gate supply "would" hopefully be the 24Vdc power input.
The input being an opto also gives isolation.
Tom... 
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True... The site doesn't provide that much of info. Hence the screen capture
Here is the link : https://s.lazada.vn/s.ewBme
Sorry, I am living in Vietnam, and there is no Amazon here. The link I provided is the only place where I can get these kind of specific modules
As for the MCU I'd use, I was thinking about an ESP32.
I also have a teensy, but if I can make it work in the prototype, I would like to make 10-20 of them (it's for an art project)
So I'd rather have an ESP32, the price seems lower
I don't need anything else from the MCU other than turn on and off randomly in time anyway
ESP32 are 3V3 output, so you will need to see if 3V3 is enough to control the MOSFET module.
If not, then you will need to have an extra transistor to change your 3V3 signal to 5V signal.
Tom...
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Argh
Jeez. Who said Arduino and MCU is a rapid prototyping tool?!. There is so much to know and to understand!
What do you recommend? Small, 5v, arduino language MCU
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