Features:_x000D_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._x000D_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._x000D_3. Sound and light dual alarm function, when the detected value exceeds the safe value, it will automatically alarm._x000D_4. Small and portable, easy to carry, can be used with one hand, carry it with you, and use it whenever you want._x000D_5. Wide range of applications: The tester can be used in residential and apartment, office, outdoor and industrial places. _x000D_ _x000D_ _x000D_Notice:_x000D_1.Actual color may be slightly different from the image due to different monitor and light effect_x000D_2.Please allow 1-3cm deviation due to manual measurement_x000D_ _x000D_Description:_x000D_Material: ABS_x000D_Power supply: 3*AAA batteries not included_x000D_Product size: 130*64*27.5mm5.1*2.5*1.1in_x000D_Electric field: Vm_x000D_Magnetic field: uTmG_x000D_Electric field: 1Vm_x000D_Magnetic field: 0.01uT0.1mG_x000D_Electric field: 1-1999Vm_x000D_Magnetic field: 0.01-99.99uT 0.1-999.9mG_x000D_Alarm threshold:_x000D_Electric field: 40Vm_x000D_Magnetic field: 0.4uT4mG_x000D_Measurement bandwidth: 5Hz-3500MHz_x000D_Sampling time: about 0.4 second_x000D_Overload indication: LCD measuring range max._x000D_Working temperature: 0-50C_x000D_Working humidity: below 80 relative humidity_x000D_Working voltage: 4.5VPackage List:_x000D_1 x Electromagnetic Radiation Detector Not including battery