Review on 8 Channel Relay Module Board For Raspberry Pi 4B/3B+/3B/2B/A+/B+/Zero by Serotonin Collazo

I bought this for a university course, the best part is no soldering is required everything is neat and ready to hook up. to your Arduino or Raspberry Pi as I did in the photo. The bad thing is that there is documentation or lack thereof. That's why I'm giving it 4 stars instead of 5. I was able to record instant data like temperature and humidity, but like printing, it wasn't all that easy. In general, if you only need it for those sensors (temperature and humidity), go ahead. that will work. However, keep in mind that you may have to sift through obscure documentation for print.