Features： 1、This kit is compatible with Arduino. 2、Made of premium quality materials, it will not rust and is durable. 3、Supports most of the Geiger tube: M4011, STS-5, SBM20, J305, etc. (the 330~600V operating voltage of the Geiger tube can be supported). 4、Support the computer (PC) data acquisition, Matlab analysis and processing. 5、Good kit for MCU software developers that just want to drive Geiger Tube for their own software. Specification： 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 Starting voltage: <; 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 ℃ Package size: 19 * 13 * 7cm Package weight: 190g Note not included Tube! Packing List: 1 * Assembled Radiation Detector System 1 * Power Supply Cable 1 * Battery Holder (without batteries) 3 * Jumper Wires 4 * Nuts 1 * Acrylic Cover Package List： 1 * Assembled Radiation Detector System 1 * Power Supply Cable 1 * Battery Holder (without batteries) 3 * Jumper Wires 4 * Nuts 1 * Acrylic Cover