MXBAOHENG Open Source Geiger Counter Ardunio Compatible kit Nuclear Radiation GM Detector Tube &gamma;&beta;-ray Radiation 1. Open source Geiger counter kit 2. For detecting&Gamma;Ray and soft&beta;Rays used 3. Ardunio compatible 4. Support PC real-time monitoring of radiation Rays 5. Support most of the Geiger tube M4011,STS-5,SBM20,J305 and so on