Description: 【OpenSource geiger Counter】:For the detection of 20mR/h ~ 120mR/h of gamma rays and 100 ~ 1800 off variables / points of the soft beta ray. 【Function】:Radiation detector, Sound and light alarm. Compatible for Ardunio. 【Display】:Interrupt the output interface, through this interface can be connected to the microcontroller and thendisplayed on the LCD. 【Supports Most of the Geiger Tube】: M4011, STS-5, SBM20, J305, etc. (the 330~600V operating voltage of the Geiger tube can be supported). 【Other functions】:Geiger counter kit module, Support the computer (PC) data acquisition, Matlab analysis and processing. Specification: Material: electronic components Geiger tube parameters: Technical parameters diameter: Φ10±0.5mm Total length: 90±2mm Starting voltage: < 350V Recommended operating voltage: 380V Minimum plateau length: 80V Maximum plateau slope: 10%/80V The highest count rate: 25 times / min Extreme operating voltage: 550V Life: > 1 x 10^9 pulse Size Chart: 11.8cmx6.3cm/4.65inchx2.48inch Package Includes: 1 x Assembled Radiation Detector System Note: Please allow slightly errors due to manual measurement and different monitors.