Climateguard radsense geiger tube module. Application is based on this github code for arduino

• Geiger–Muller tube: SBM 20-1
• Supported radiation range, μR / h: 14,4 ... 144 000,0
• Own background noise, no more, imp / s: 1
• Sensitivity to gamma radiation (37 Cs source), imp / μR: 160 … 75
• Spread of relative sensitivity: 15 %
• Supply voltage, V: 3,0 ... 3,5
• Maximum current consumption, mA: 50
• Connection interface: I2C
• I2C frequency, kHz: 400
• I2C address: 0x66
• SBM20-1 counter sensitivity, imp / μR: 105
• Radiation LED indication: yes
• Power LED indicator: no
• Operating temperature range, °C: -20 ... +60
• Dimensions, mm: 89 х 21 х 13,5
• Device weight (approx), g: 12