Features: Reliable Radiation Detector: High sensitivity wide measuring range and long service life. Frequent use of nuclear radiation detectors helps to avoid radiation hazards from the environment in daily life. Practical: Can detect ionization radiation from x -ray leftover radiation from a nuclear blast or contamination areas over granite and non-ionizing radiation from cellphone computer router microoven vegetable fruit meat fish. Easy Operation: Easy to use compact and portable the operation interface is simple and clear. You don't need mach professional knowledge. Over Safety Value Alarm: When the testing result exceeds (Electric field > 40 V/M and Magnetic field> 0.4T or 4mG) it will trigger the sound & light alarm of the EMF tester. And long pressing the middle button can turn on/off the sound alarm. After-sales Service: If you receive a defective product or have any problems during use please feel free to contact us We will contact you as soon as possible. Notice: Actual color may be slightly different from the image due to different display and light effect. Please allow 1-3cm deviation due to manual measurement. Specifications: Detection Technology: G-M detection technology Detection Type: y and X-ray Display Mode: LCD screen + backlight Energy Range: 20kev-3.2mev <+30%(137Cs-) Sensitivity: 80cpm/uSv/(Co-60) TestAaccuracy: 0.01 Sv/h Real-time Range: 0-99.99 Sw/h Accumulation Range: 0-99.999 mSv/h Real-time Error: 10% Mean Error:3% 11 Power Supply Mode: 3 1.5V dry batteries or 3 1.2V rechargeable batteries Battery Time: 4 hours Overall size: 106 * 70 * 30mm includes: 1 *Nuclear Radiation Detector "