Item Type: Nuclear Radiation Detector_x000D_ Model: BR-6_x000D_ Material: ABS_x000D_ Uses: Home decoration environment detection, safety distance detection after iodine ion implantation, radiological protection detection, subway airport security inspection machine detection, overseas shopping for Japanese goods residue detection, maternity and baby products radioactivity detection, jewelry, stone and jade article radioactivity detection, cosmetic radiation residue detection and all the occasion that need to detect radioactivity_x000D_ Battery: 2 x 1.5V AA battery (not include)_x000D_ Basic Parameters: _x000D_ Sensor: Energy compensation type GM tube_x000D_ Detection Type: Beta, gamma, x ray_x000D_ Inherent Error: 10%_x000D_ Sensitivity: 80cpm sv (Co 60)_x000D_ Measurement Range: 00.00~99.99sv per h_x000D_ Sound Source Type: Real particle sound, alarm sound, mute_x000D_ Alarm Threshold: 0.5, 1.0, 2.0, 5.0