I was testing risinghf gateway module. I have carried out the test on 5 modules my company has purchased. 1 defective, 2 working well, and another 2 works with little issue, i.e. the module will reset unexpectedly in the middle of progress. The issue might come from the Raspberry Pi adapter that I developed myself, so the issue is still being investigated. In short, those modules are good for education, DIY, demonstration purpose. But for larger application, I would always suggest an industrial grade gateway . What do you guys think?