Features: Intelligent for Protection & Alarm: when the radiation value exceeds the set value, the nuclear radiation dosimeter will alarm automatically, helps to avoid radiation hazards in daily life. Two Power Supply Modes: the nuclear radiation detector can use either rechargeable batteries or dry batteries. Easy to Operate: large LCD display screen, with reasonable button layout, allows you to read the real-time values easily and quickly, great for new startters or elders. High-performance Chip: strong anti-interference ability, high detection accuracy range and fast response. Wide Application: Widely used in unknown area ray patrol, environmental pollution investigation, isotope application, industrial X and non-destructive flaw detection, radiation, radioactive laboratory and surrounding environment monitor of nuclear facilities. Specifications: Model: FS2011 Measurement Accuracy: 0.01Sv Resolution: 0.01 Detector: energy compensation FM tube (for Ge leather count tube) Energy Range: 50KVE-1.5MEV 30% Battery Usage: No. 5 (AA) Dry Cell Size: Approx. 11.6x3.5x2 for cm/4.56x1.37x0.78 inch Material: ABS Plastic Color: Black Type: Dry Battery Powered, Rechargeable Battery(optional) Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1 Piece Radiation Detector