Features:1. Using a large LCD screen, the values are clearly displayed on the screen, which is more convenient to read and has a better experience.2. The radiation assessment function can indicate whether the current radiation value is at a safe level. Three-color light indicates the current magnetic field status: safety, warning, avoid. If the electric field data exceeds the safe state, the screen will turn red to remind you.3. Sound and light dual alarm function, when the detected value exceeds the safe value, it will automatically alarm.4. Small and portable, easy to carry, can be used with one hand, carry it with you, and use it whenever you want.5. Wide range of applications: The tester can be used in residential and apartment, office, outdoor and industrial places. Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurement Description:Material: ABSPower supply: 3 x AAA batteries not includedProduct size: 130 x 64 x 27.5mm/5.1 x 2.5 x 1.1inElectric field: V/mMagnetic field: uT/mGElectric field: 1V/mMagnetic field: 0.01uT/0.1mGElectric field: 1-1999V/mMagnetic field: 0.01-99.99uT /0.1-999.9mGAlarm threshold:Electric field: 40V/mMagnetic field: 0.4uT/4mGMeasurement bandwidth: 5Hz-3500MHzSampling time: about 0.4 secondOverload indication: LCD measuring range max.Working temperature: 0-50CWorking humidity: below 80 relative humidityWorking voltage: 4.5V Package List:1 x Electromagnetic Radiation Detector Not including battery Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.