Check the listing for details. ET925 Handheld EMF Meter Digital LCD Electromagnetic Radiation Detector 1999V/m. Condition: Brand New. Listed at 40.44 USD. Feature: Using a large LCD screen, the value can be clearly displayed on the screen, making it easier for you to read and giving you a better experience. The detector can detect electric and magnetic field radiation for you at the same time, allowing you to obtain two important values in one test. Sound and light dual alarm function, when the test value exceeds the safe value, it will automatically alarm. Data hold function: short press the "Power/HOLD" key, the reading is locked, the screen displays the (HOLD) icon, press again to resume normal measurement, the (HOLD) icon is not displayed. It is small in size and easy to carry. It can be easily used with one hand, and it can be carried anywhere you want to use it with you. 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 avoid. If the electric field data exceeds the safe state, the screen will turn red to alert you. Wide range of applications: The tester can be used for electromagnetic radiation monitoring in residences and apartments, offices, outdoor and industrial sites, electromagnetic radiation testing of mobile phones, computers, TVs, refrigerators and high-voltage cables, radiation protection product testing, etc. Radiation protection effect such as radiation film. Specification: Material: ABS Unit: Electric field: V/m Magnetic field: uT/mG Accuracy: Electric field: 1V/m Magnetic field: 0.01uT/0.1mG Scope: Electric field: 1-1999V/m Magnetic field: 0.01-99.99uT/0.1-999.9mG Alarm threshold: Electric field: 40V/m Magnetic field: 0.4uT/4mG Measurement bandwidth: 5Hz-3500MHz Sampling time: about 0.4s Overload indication: the maximum value of the measurement range on the LCD Working temperature: 0-50℃ Working humidity: relative humidity below 80% Working voltage: 4.5V Battery: 3 * AAA batteries (not included) Size: 12.6*6*2.8cm/4.96*2.36*1.1inch