1. 5V power supply, or 1.5V 3 batteries; 1.2V 4 batteries, current: 30mA - 12mA2. Used to detect gamma rays from 20mR/h~120mR/h and 100~1800 off Variation/spot/cm 2 of soft beta rays.3. Sound and light alarm; Compatible with for 4. Interrupt output interface, through which you can connect The microcontroller is then displayed on the LCD.5. Support most Geiger tubes: M4011, -5, SBM20, J305, etc. (Can support Geiger tube 330~600V working voltage).Support computer (PC) data acquisition, Matlab analysis and processingDetect nuclear radiation work (copy to your browser to watch): http: //v.youku.com/v_show/id_XNzI3MTU2NzQ0.htmlCustomer recording video with our Geiger counter: http: //v.youku.com/v_show/id_XOTE4ODIyNTIw.htmlcompatible: (recommend for R3, or any other arbitrary with 5V and external interrupt )Internet Downloadable: SPI Example for Radiation LoggerLogger Radiation can be used as a host computer software to build a radiation monitoring station.Product Description: Name: Radiation Detector SystemGeiger tube parameters: Technical parameters Diameter: 100.5mmTotal length: 902mmStarting voltage: Less than350VRecommended working voltage: 380VMinimum platform length: 80VMaximum platform slope: 10%/80VLimit working voltage: 550VMaximum counting rate: 25 times/minLifetime: 1 x 10^9 pulsesMedium temperature: -40~55Material file: Google Cloud Storage: https: //drive.google.com/folderview?id=0B9itH-BnWE5sY2JGRkM4MWhSYkE&=sharingsize: 10.8 x 6.3 x 2cmMaterial: ABScolour: bluePackage Contents: 1 x DIY Geiger Counter KitOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.