Materials Download Link:

https://github.com/2969773606/GeigerCounter-V0.8

Specifications:
Mateial: printed circuit board
Geiger Tube Model: M4011
Type-C interface power supplys cable
Power consumption current: 20mA
Item size: 92 * 61mm / 3.6 * 2.4in
Item weight: about 40g / 1.4ounce
Package size: 150 * 100 * 40mm / 5.9 * 3.9 * 1.6in
Package weight: 60g / 2.1ounce

Tube M4011 Specification:
Diameter: Φ10±0.5mm
Total length: 90±2mm
Starting voltage: <350V
Recommended working voltage: 380V
Minimum ping-length: 80V
Maximum ping-slope: 10%/80V
Extreme working voltage: 550V
Maximum background count rate: 25 times / min
Lifetimes: >1 × 109 pulses
Detection: X β γ ray

Packing list:
1 * Assembled Radiation Detector Kit

1* Type-C interface power supplys cable

1* Acrylic Dust cover