by: adminPosted on: December 27, 2022 GQ GMC-300S Digital Nuclear Radiation Detector Monitor Meter Geiger Counter Radiation Dosimeter Price: $79.98 - $75.98(as of Dec 27,2022 01:35:08 UTC – Details) History data can be downloaded to computerRechargeable battery last longerFree data Viewer PC softwareDosimeter mode, CPM count mode, Graph mode