Feature:1. Large Screen: The display screen of electromagnetic radiation detector is large, which makes data reading more convenient, and the backlight can be turned on or turn off.2. Easy to Use: The environmental radiation detector adopts key operation, just like a remote control. This tester has 4 modes, that is mute and alarm mode, test and pause mode.3. High Quality Shell: The shell of the radiation tester is made of high quality ABS material, with good heat resistance, excellent cold resistance, high strength and good toughness.4. Multifunctional: The electromagnetic radiation detector can meet the needs of family life detection, substation detection, mobile signal tower detection and so on.5. High Performance: The magnetic field tester has the advantages of high sensitivity, wide range, durability and portability. Daily use helps to avoid radiation hazards.Specification:Item Type: Electromagnetic radiation detectorMaterial: ABSWeight: Approx. 125g/4.4ozTest Scope:Power Density: 0-99.999w/cElectric Field Strength: 0-999.99v/mMagnetic Field Strength: 0-99.999TTest Accuracy:Power Density: 0.001w/cElectric Field Strength: 0.01v/mMagnetic Field Strength: 0.001TFrequency Range:Power Density: 50mHz-5GHzElectric Field Strength: 20Hz-100MHzMagnetic Field Strength: 20Hz-1MHzBattery: 3xAA batteries(Excluded)Purpose: Radiation detection of mobile phones, computers, televisions, refrigerators, high voltage lines, etc..Package List:1 xElectromagnetic Radiation Detector1 x Instructions