HT629 Nuclear Radiation Detector Geiger Counter X-ray Y-ray β-ray Detector LCD Display Marble Radioactivity Tester Personal Dosimeter

OverviewSpecifications: Material: ABS Type of Detection Rays: Type of detection rays βrays, Yrays, Xrays Detector: Energy Compensation GM Tube (Geiger Counter Meter) Dose Equivalent Rate: 0.00-50000μSvh (50mSv/h) Cumulative Dose Equivalent: 0.00μSv-5000mSv Energy Range: 48keV-1.5MeV≤±30% (for 137Cs-) Sensitivity: 80CPM/uSv Real Time Accuracy: ≤± 15% (below 100uSv/h); ≤ ± 20% (above 100uSv/h, below 1000uSv/h)                                   ≤±25% (above 1000uSv/h) Unit Switching: μSv/h, mR/h, cps, cpm Data Hold: Yes Low Battery Indication: Yes Backlight Alarm Prompts: Green / Red Buzzer Alarm Prompts: Yes Buzzer On/Off: Yes Maximum: Yes Average Value: Yes Accumulated Value: Yes Auto Power Off: Yes Power Supply: 3 * 1.5V AAA batteries (Not included) Item Size: 142 * 58 * 28mm / 5.59 * 2.28 * 1.10in Item Weight: 117g / 4.12oz Package Weight: 216g / 7.62oz Package Size: 18.5 * 9 * 6cm / 7.28 * 3.54 * 2.36in