Features:
For the detection of 20mR/h ~ 120mR/h of gamma rays and 100 ~ 1800 off variables / points of the soft beta ray.
Sound and light alarm.
Interrupt the output interface, through this interface can be connected to the microcontroller and then displayed on the LCD.
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.

Specifications:
Geiger tube parameters:
Technical parameters diameter: Φ10±0.5mm
Total length: 90±2mm
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 ℃
Item size: 118 * 63mm / 4.6 * 2.5in
Package size: 130 * 80 * 50mm / 5.1 * 3.1 * 2.0in
Package weight: 166g / 5.9ounce