Specification: Item Type: Radiation Detector Material: ABS Power Supply: 3 x AAA, Dry Batteries (Shipped Without Batteries) Detection Range: RF, Power Strength: 0-99.999μw/cm Magnetic Field Strength: 0-99.999μT Electric Field Strength: 0-999.99v/m Frequency Range: RF, Power Strength: 50MHz-5GHz Magnetic Field Strength: 20Hz-1MHz Electric Field Strength: 20Hz-100MHz Detection Accuracy: RF, Power Strength: 0.001μw/cm Magnetic Field Strength: 0.001μт Electric Field Strength: 0.01v/m Gross Weight: Approx. 151g/5.3oz Package List:1 x Radiation Detector (Battery Not Included) 1 x Instruction Manual Features [Color Indication] The radiation detector provides a quick detection using three colors to indicate the radiation level and alert you whether the current radiation level is safe. [Applications] Many industrial equipment and household appliances generate electromagnetic radiation, and can be used in kitchens, high voltage equipment, homes, factories, offices, etc. [Beep Sound Alert] Handheld radiation detector with three levels of distinction, once the highest will beep sound to prompt you. Can detect RF, magnetic field and electric field strength. [One Key Lock Screen] This electromagnetic radiation meter with a key lock screen function, to keep the data does not jump, so that you can read the data more clearly and intuitively. [Battery Power Supply] Electromagnetic radiation detector uses 3 AAA dry batteries (not included) for power supply, easy to carry, without worrying about plugging in the problem.