Using a large-size LCD display, the values are clearly displayed on the screen, making it easier for you to read and giving you a better experience. This detector detects electric and magnetic field radiation for you, allowing you to obtain two important values in one test. Sound and light dual alarm function, when the detection value exceeds the safe value, it will automatically alarm. Data hold function: Short press the "Power/HOLD" button, the reading will be locked, and the [HOLD] icon will be displayed on the screen. Press it again to resume normal measurement, and the [HOLD] icon will no longer be displayed. Small and portable, easy to carry and use with one hand, take it with you wherever you want to use it. The radiation assessment function can indicate whether the current radiation value is at a safe level. The three-color light indicates the current magnetic field status: safe, alarm, and avoidance. If the electric field data exceeds the safe status, the screen will turn red to remind you. Wide application: This tester can be used for electromagnetic radiation monitoring in residential apartments, offices, outdoor and industrial places, electromagnetic radiation detection of mobile phones, computers, TVs, refrigerators and high-voltage cables, radiation protection product detection, etc. Radiation protection effect of clothing, radiation protection film, etc. Specifications: Material: ABS Unit: Electric field: V/m Magnetic field: uT/mG Accuracy: Electric field: 1V/m Magnetic field: 0.01uT/0.1mG Range: Electric field: 1-1999V/m Magnetic field: 0.01- 99.99uT/ 0.1-999.9 mG alarm threshold: Electric field: 40V/m Magnetic field: 0