Features: This kit is compatible with Arduino. Made of premium quality materials, it will not rust and is durable. 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. Good kit for MCU software developers that just want to drive Geiger Tube for their own software. Specification: Color: multicolor Material: metal Geiger tube parameters: Technical parameters diameter:100.5mm Total length: 902mm Starting voltage: 1 x 10^9 pulse Medium temperature: -40 ~ 55 Package size: 19 * 13 * 7cm Package weight: 200g Packing List: 1 * Assembled Radiation Detector System 1 * GM Tube 1 * Power Supply Cable 1 * Battery Holder (without batteries) 3 * Jumper Wires 4 * Nuts 1 * Acrylic Cover