Radiation Detector Gamma Radiation Range Detects Gamma down to 10-12 KeV Has more linear reading above 40KeV Alpha Energy Sensitivity Down to 2MeV Beta Energy Sensitivity Down to 2MeV Gamma and X-ray Energy Sensitivity 1000 CPM/mR/hr (referenced to Cs-137 Analog Display Display Units mR/hr CPM or uSv/hr Powered By 9V Battery Battery Life 2 000 Hrs At Normal Background Calibration Certificate Cert. of Conformance Manufacturers Warranty Length 1 Year Warranty