With the ability to accurately measure electromagnetic radiation intensity, this emf detector ensures that you are aware of any potential radiation sources in your environment. By detecting electronic , it provides accurate readings and helps you identify and avoid radiation. Features -Color:Black -Material:ABS -Size:15.00X6.50X3.00cm/5.89X2.55X1.18in There are 5 LEDs, each representing a field strength range as follows: Dark Green - "normal" area - normal background magnetic field. 0 to 1. Green - "low" zone - low level magnetic field. 1.5 to 2. Yellow - "Warning" area - medium magnetic field. 2.5 to 10 Orange - "high" zone - high magnetic field. 10 to 20 Red - "Warning" zone - extremely high magnetic field. 20+ -The emf meter is a reliable and accurate way to measure electromagnetic fields, providing peace of mind those who want to ensure their safety. -The magnetic field detector is a versatile tool that can be used in a variety of settings, from homes and offices to industrial sites and construction sites. -The emf meter is a valuable tool for anyone who wants to reduce their exposure to radiation, helping to create a safer environment. -The emf meter is a simple and easy-to-use tool that be used by anyone, regardless of their level of technical expertise. - workmanship, reasonable structure, professional and practical, can bring you convenience. Package list: 1 x meter