Unassembled DIY Geiger Counter Parts Kit Module Nuclear Radiation Detector This is a set of fine quality nuclear radiation detect module unassembled parts set, plug it and you can directly measured nuclear radiation. For the detection of 20mR/h-120mR/h of gamma rays and 100-1800 off variables/points of the soft beta ray. You can have a try. Features: 5V power supply, or 3 * 1.5V battery; 4 * 1.2V battery, current: 30mA - 120mA. For the detection of 20mR/h-120mR/h of gamma rays and 100-1800 off variables/points of the soft beta ray. Equipped with sound and light alarm. Supports most of the Geiger tube: M4011, STS-5, SBM20, J305, etc. (the 330-600V operating voltage of the Geiger tube can be supported). Support the computer (PC) data acquisition, Matlab analysis and processing. Compatible with: (recommended UNOR3, or any other arbitrary with 5V and external interrupt INT) Internet can be downloaded: SPI example for Radiation Logger Logger Radiation can be used as the host computer software to build radiation monitoring station. Specifications: Material:  electronic component  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 Operating voltage: 550V The maximum count rate: 25 times / min Life: > 1 * 10^9 pulse Medium temperature: -40 to 55 ℃ Item size: 108 * 63 * 20mm / 4.25 * 2.48 * 0.79in Item weight: 100g / 3.53ounce Package size: 120 * 80 * 40mm / 4.72 * 3.15 * 1.57in Package weight: 150g / 5.29ounce  Packing List: 1 * Unassembled Radiation Detector Module Set