Features: The -screen display makes it easier to read data, and the buttons are easy to operate. The shell is made of high-quality ABS, which has heat resistance and cold resistance, high strength and toughness. High sensitivity, wide measuring range and long service life. Both electromagnetic radiation and nuclear radiation can be detected. It can meet the needs of detection, substation detection, mobile signal tower detection and so on. It can also be applied to inspection, environmental testing, radiation protection, radiopharmaceutical screening, etc. Use the mute, alarm, particle sound button, test, average reset to retest the button, the backlight can be turned on or off. Screen size: 57 x 43mm / 2.2 x 1.7 inches Electromagnetic radiation test: Test Range: Power density: 0-99.999w/c Electric field intensity: 0-999.99v/m Magnetic field strength: 0-99.999T Test accuracy: Power density: 0.001w/c Electric field intensity: 0.01v/m Magnetic field strength: 0.001T Frequency Range: Power density: 50MHz-5GHz Electric field strength: 20Hz-100MHz Magnetic field strength: 20Hz-1MHz Nuclear radiation test: Sensor type: energy compensation type tube Detectable type: , , X-ray Energy range: 20kev~3.0mev30% (137Cs-) Sensitivity: 80cpm /sv/ (Co-60) Test accuracy: 0.01sv/ h Real-time range: 0-99.99sv/ h Accumulation range: 0-99.999msv Real-time error: 10% Average error: 3% Battery: 3 * AA 1.5V batteries or 3 * 1.2V rechargeable batteries (not included) Charging: USB 5V 2A input : ABS colour: yellow Package Contents: 1 x Geiger Counter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.