Digital LCD Electromagnetic Field Radiation Detector EMF Meter Dosimeter TesterFeature: 1: The two data are clear at a glance, helping you get rid of the tedious and troublesome need to replace the machine during the measurement, easily get it by one machine. 2: One key to lock the radiation value, convenient for you to record related data. 3: Intimately remind whether the current radiation is safe. 4: Adopt LCD display screen with backlight, which has both general environment and low light environment measurement capabilities.