This sensitive geiger counter kit uses a Russian geiger mueller tube and a microcontroller IC to measure and display radiation counts on a 3 digit display. The counter is sensitive to beta and gamma rays and will indicate the presence of radiation with a click from the built in speaker and a brilliant blue-green flash from an LED. In addition the microcontroller IC outputs the count to a pale yellow 3 digit display (the display is visible indoors but not bright enough to viewed outdoors in order to conserve battery life). The unique feature of the microcontroller digital output is that you can select either counts per minute or total counts to be displayed. The total counts display uses a unique setup with multiplier LEDs to indicate 10x 100x and 1000x counts allowing the counter to display 999,000 before an overflow LED lights up. In the lower range (from 0 - 999) no multipliers are used. The microcontroller is fully programmed and the kit comes with: all parts, PC board, microcontroller, instructions and Russian geiger mueller tube made during the cold war (every tube is verified for proper operation). Operates from one 9V battery (not included). The size of the PC board is 4.25" x 3.2". No case available. Kit requires soldering. Skill level 2. Please have soldering experience before building this kit as some components use high voltage where faulty soldering will cause problems with kit operation.
