Nuclear Radiation Detector (Geiger counter)

Nice handheld device with easy user interface and a nice little easy to follow manual. Two draw backs. 1- Is it uses a J613 tube and not the correct M4011/J321 muller tube so detection level is lower then should be (easy fix) there are YouTube videos to fix it. 2- no click noise for those expecting clicking noise 🤷🏻‍♂️

I rally liked it

Good Geiger counter

Works amazingly has a good screen and overall great