Features: Radiation Meter is electric field, magnetic field, and radio frequency field multifuctional meter. It is equipped with a builtin electromagnetic radiation sensors, which can display tha radiation value on LED screen after processing by the chip. You can make reasonable processing or take effective prevention measure toward the electromagnetic radiation according to the tester result. It is used to test the measurement of electromagnetic radiation in living environment such as offices, computer room, power distribution room, and transmission tower. Sound-light Alarm: When the tester result exceeds the safe value, the instrument will alarm automatically. The Radiation reader also provide a maximums value, "HOLD" the screen to observe the reading, and long pressing on the power button turns offs the backlights to save power. Specifications: Material:ABS Sensitivity:1V/M,0.1mG/0.01uT,0.01mW/m² Measurement Ranges：1-1999V/M,0.1-999mG/0.01-99.99uT,0.01-19.99mw/m² Frequency Ranges: 50Hz-3500MHz Automatic Shutdown: No operation for 15 minutes Power:1Piece 9V Battery(not included) Package Includes: 1Piece Radiation Meter note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.