Features [Portable and Convenient] Compact in size, this tester can be easily placed in your pocket or wallet, allowing for easy portability and convenience. [Versatile Application] Primarily used for testing TVs, computers, microwaves, refrigerators, printers, and other electric appliances, this tester ensures that you can assess radiation levels in various environments. [Color LED Indicator] This EMF meter is equipped with 9 color LED indicator lights, allowing you to easily read in both daylight and darkness. [Guard Your Health] This detection device is designed to measure the level of electromagnetic field radiation, helping you guard your health and well being. [Wide Detection Range] With a detection range of 0.05μT to 2000+ milliGauss and a frequency range of 50 Hz to 20000 Hz, this tester provides comprehensive detection of electromagnetic field radiation. Specification: Item Type: EMF Meter Material: ABS Battery: 9V battery x 1 (shipped without battery) Detection Range: 0.05μT to 2000+milliGauss Detection Frequency: 50/60Hz (50-1000Hz ELF), (1000-20000Hz VLF) Package List: 1 x EMF Meter Package List 1 x EMF Meter