This is a simple case I designed for housing a SonOff S31. I can only find a US version of this product which is not much good for me in Europe. So having removed the original case, I needed some where to house it safely.
The cable restraint should be done with proper glands, put for this prototype I'm happy with the zip ties.
This is the first project I've tried with 3mm brass threaded inserts. Worked out really nice and I'll be using them again.