1、Radiation Detection: The nuclear radiation detector is suitable for the detection of 20mR/h‑120mR/h of gamma rays and 100‑1800 off variables and points of the soft beta rays. 2、Upgraded Components: Reasonable circuit layout design, interrupt output interface, which can be connected to and displayed on LCD. 3、Audible and Visual Alarm: Counter kit has visual and sound indication of the radiation and can be used as detector of dangerous radiation levels or radioactive materials in your environment. 4、DIY geiger counter kit support computer (PC) data acquisition, Matlab analysis and processing. Perfect for MCU software developers that just want to drive geiger tube for their own software. 5、Complete Parts: Kit includes all components needed to build a working geiger counter, including a circuit board, sensitive geiger tube, acrylic board, wiring and battery box Item Type: Unassembled Geiger Counter DIY Kit Material: Electronic board Gross Weight: 310g / 10.9oz Geiger Tube Parameters: Technical Parameter Diameter:10±0.5mm / 0.4±0.02in Total Length: 90 ± 2mm / 3.5±0.1in Starting Voltage:<350V Recommended Working Voltage: 380V Minimum Platform Length: 80V Maximum Platform Slope: 10%/80V Limit Operating Voltage: 550V Maximum Counting Rate: 25 times/minute Service Life:>1 x 10⁹ pulses Medium Temperature: - 40~55 ℃ Plug: USB Battery: AA 1.5v dry battery (3pcs required) (shipped without battery) 76 x Accessories 1 x Electronic Board 1 x Acrylic Board 1 x Battery Box 1 x USB Cable 2 x Wiring 1 x Geiger Tube