You should have bought from the Pudibei range, NR950 etc. This unit has no geiger sound. Also this is not detecting alpha radiation. It's picking up beta and gamma only.
@@ludicscience It's not too hard to add sound, I have a short video on my youtube with working sound. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-evWQS8CJqDw.html
