This is a multifunctional measurement instrument for electric, magnetic, and radiofrequency fields. Key features - Built-in sensors measure electromagnetic radiation from electric, magnetic, and radiofrequency sources, with results shown on the LED display after chip processing. - Displays the maximum value (MAX) and includes a HOLD function to freeze the current reading for easy observation. - Long-pressing the Power button turns off the backlight to save power. What it helps you do - The processed readings allow you to assess exposure levels and decide on reasonable actions or preventive measures based on the test results. Suitable applications - Home or office environments to check desk areas and workstations for EM exposure. - Computer rooms or data centers to monitor equipment-related radiation. - Power distribution rooms or near transmission towers to evaluate higher RF sources. This device provides practical, in-context measurements to support safety and risk assessment related to electromagnetic radiation.