Feature:

1. Applicable: This DIY opening source Geiger counter kit is compatible for radiation detector, please confirm the detector model before use.
2. Purpose: Nuclear radiation detection, for detecting 20mR/h‑120mR/h gamma rays and 100‑1800 off variables per points of the soft beta ray.
3. Sound and Light Alarm: This DIY detector has a sound and light alarm function, which will alarm in time when detecting abnormal data.
4. Tube: The tube is a tin oxide cathode, coaxial cylindrical thin wall structure (pipe wall density 50±10cg/cm2), pulse applied halogen pipe.
5. Suggestion: Please remember that building materials may contain natural , which is why you should be careful to choose materials when building, because they will pose a great threat to your health, when moving to a new place, you must check there is no radiation.

Specification:

Item Type: DIY Geiger Counter Kit
Material: Circuit Board
Gross Weight: 168g / 5.9oz
Product Size: Approx.11.3 x 6.3 x 1cm / 4.4 x 2.5 x 0.4in
Purpose: nuclear radiation detection
Battery: AA 1.5V dry battery (3pcs required) (shipped without battery)
Parameters of matching Geiger tube: The pipe is a tin oxide cathode, coaxial cylindrical thin wall structure (pipe wall density 50 ± 10cg/cm2) pulse application halogen tube, which is used to detect 20mR/h~120mR/h, gamma rays and 100‑1800 off variables per points of the soft beta ray.
Technical Parameter Diameter: Approx.10±0.5mm / 0.4±0.02in
Total Length: Approx.90±2mm / 3.5±0.08in
Starting Voltage: ＜350V
Recommended Working Voltage: 380V
Minimum Length: 80V
Maximum Slope: 10% 80V (see M4011 below for details)
Limit Operating Voltage: 550V
Maximum Background Count Rate: 25 times/minute
Service Life: ＞1x10^9 pulse

Package List:

1 x Mainboard

4 x Red Gasket

4 x Small Screw

4 x Large Screw 

4 x Nut 

1 x Acrylic Plate

1 x USB Cable

1 x Geiger Tube

2 x Wiring

1 x Battery Box