Features: 1) 5V power supply, or 1.5V 3x battery; 1.2V 4x battery, current: 30mA - 12mA. 2) for the detection of 20mR/h ~ 120mR/h of gamma rays and 100 ~ 1800 offvariables / points / cm 2 of the soft beta ray. 3) sound and light alarm 4) interrupt the output interface, through this interface can be connected to the microcontroller and then displayed on the LCD. 5) for Ardunio compatible. 6) supports most of the Geiger tube: M4011, -5, SBM20, J305, etc. (the 330~600V operating voltage of the Geiger tube can be supported). 7) support the computer (PC) data acquisition, Matlab analysis and processing Description: Name:Radiation Detector system Geiger tube parameters: Technical parameters diameter:Φ10±0.5mm Total length: 90±2mm Starting voltage: Less than 350V Recommended operating voltage: 380V Minimum plateau length: 80V Maximum plateau slope: 10%/80V Extreme operating voltage: 550V The maximum count rate: 25 times / min Life: 1 x 10^9 pulse Medium temperature: -40 ~ 55 ℃ Size:108x63x20mm Color: As Shown Material: Electronic Component Package Contents: 1 Set Geiger Counter Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.