Large Backlight LCD Screen: The EMF detector is installed with a 2.4" large screen, which has a backlight function even in the dark. The large screen can display both electric and magnetic fields, which is impossible for ordinary electromagnetic fields. detectors. Easy to use and multiple modes: With 4 function buttons, the EMF meter is easy to use and can easily switch between electric field/magnetic field measurement and temperature measurement . With data hold, the EMF meter will always display measurements on time. In maximum value mode, the EMF meter displays the maximum value during measurement. [Appearance, drop resistance]: Based on years of research and development experience, combined with consumer needs, this ergonomic, elegant and comfortable detector has been designed. The interior is made of high quality ABS material and the exterior has an extra layer of soft TPE rubber to better protect the device and withstand a 1.2m drop.