RADEX RD1212-BT"Outdoor" Edition, Advanced Radiation Detector, Geiger Counter for iPhone and Android with Dosimeter : Buy Online at Best Price in KSA - Souq is now Amazon.sa: Industrial & Scientific
Modded geiger counter finally done (enough)! Three selectable tubes; J321 and SBM-20U, and an SBT-9. : r/Radiation
RadMeter - Apps on Google Play
Using the Geiger Counter
New and Improved Geiger Counter - Now With WiFi! - Electronics-Lab.com