Accurate Electromagnetic Radiation Detector: handed operation, easy to move onsite measurement, effectively identify the signal source, locate the signal position. The EMF detector has high sensitivity with a builtin magnetic radiation sensor, which displays radiation value on the digital LCD screen after processing by control microchip. Additional Features: Automatic shutdown after 5 minutes of inactivity, switchable temperature (C\/F) and magnetic field unit (T\/mG). Large and backlight LCD is clear for viewing. Flash Red: The EMF meter is builtin signal strength prompt speaker, and will trigger a soundlight alarm when the radiation data exceeds the safe range (Electric field > 40 V\/M and Magnetic field> 0.4T). The detector will flash red and alert the user via an alarm sound automatically. Multipurpose Detector: It can be used to detect the effect of protective equipment such as radiation protection clothing and radiation protection film. It is widely used in general EMF research and detection such as electromagnetic radiation monitoring and testing, also used for measuring daily household appliances. Easy to Read: The operation interface of the detector is simple and clear. and the large LCD display of the values for easier reading. Easy to use with hand operation.