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 76 x Accessories1 x Electronic Board1 x Acrylic Board1 x Battery Box1 x USB Cable2 x Wiring1 x Geiger Tube Item Type: Unassembled Geiger Counter DIY KitMaterial: Electronic boardGross Weight: 310g / 10.9ozGeiger Tube Parameters:Technical Parameter Diameter:10± 0.5mm / 0.4± 0.02inTotal Length: 90 ± 2mm / 3.5± 0.1inStarting Voltage:<350VRecommended Working Voltage: 380VMinimum Platform Length: 80VMaximum Platform Slope: 10%/80VLimit Operating Voltage: 550VMaximum Counting Rate: 25 times/minuteService Life:>1 x 10⁹ pulsesMedium Temperature: - 40~55 ℃Plug: USBBattery: AA 1.5v dry battery (3pcs required) (shipped without battery)