The GQ EMF-390 advanced multi-function digital EMF ELF meter is designed and developed by GQ Electronics, Seattle, USA. It is a portable and convenient device. It can be used in general purpose test, detection and other scientific applications. Such as Power Line, WiFi, Cell phone, Cell tower, Microwave, Smart Meter, etc. The device integrated features include three axis Electromagnetic Fields, Electric Field, Radio Frequency and Radio Spectrum Power Analyzer.<BR><BR> The meter is able to identify/recognize the common source from EMF/RF measured, such as Power Line, WiFi/Cell phone, Cell tower, Microwave etc. It also comes with built-in audible and visual alarm. It can be used for EMF, ELF, EF, RF detection and monitoring both indoor and outdoor, as well as in other similar environments. It can continually monitor the radiation while it is connected with a USB port as power supply. When the device is connected to a PC, PC software can download the radiation data to the computer and the user is able to analyze those data later. The device also has a high contrast black/white LCD module and one front LED indicator.<BR><BR> The unique GQ RF Browser feature visualizes the RF radiation precisely on screen. With RF Browser, user is able to see estimated Digital RF transmission data in bytes and RF power spectral histogram.<BR><BR> EMF-390 has built-in flash memory and it is able to log the real-time data EMF,EF and RF power every second. User is able download the data later from a free software EMF-PRO.