The first version of my radiation detector is being sent to people all over the world and I've gotten very good feedback. Now I need to make a second version with Bluetooth and gamma spectroscopy. And a longer battery life. And higher max range. And higher sensitivity. And a bigger screen, probably. https://www.bettergeiger.com
Looks great and I see it has a lot of positive reviews. Out of curiosity, since this is a a high-stakes equipment since it's used for safety, did you have to get a certification of any kind to sell it commercially? I also see you ship test material. Have you compared readings with other industrial counters and gathered data on your detectors accuracy, scale and error margins?