For the detection of 20mR/h ~ 120mR/h of rays and 100 ~ 1800 off variables / points of the soft ray. Sound and light alarm. Interrupt the output interface, through this interface can be connected to the microcontroller and thendisplayed on the LCD. Supports most of the Geiger tube: M4011, -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. Model:-1602-NANO Geiger tube parameters: Technical parameters diameter: 10 +/- 0.5mm length: 90 +/- 2mm Starting voltage: less than 350V Recommended operating voltage: 380V Minimum plateau length: 80V Maximum plateau slope: 10%/80V Extreme operating voltage: 550V The maximum count rate: 25 / min Life: more than 1 x 10^9 pulse Medium temperature: -40 ~ 55 Item size: 118 x 63mm / 4.6 x 2.5inch colour: blue + green Material: plastic + metal Package Contents: 1 x Geiger Counter Kit Only the above package content, other products are not included. Note: Light 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.