Description: This hand-held portable electromagnetic radiation tester can accurately detect electromagnetic waves and meet the needs of various scenes. Large screen display makes it easier to read data, and easy to operate. The housing is made of high quality ABS, which has fine heat resistance and cold resistance, high strength and fine toughness. It can meet the needs of home life detection, substation detection, mobile signal tower detection, etc., and it is easy to carry. With mute and alarm , test and pause , and the backlight can be turned on or off. Specification: Material: ABS Item size: 105x70x30mm/ 4.13x2.76x1.18in Test range: Power density: 0-99.999μw/cm² Electric field intensity: 0-999.99v/m Magnetic field intensity: 0-99.999μT Test accuracy: Power density: 0.001μw/cm² Electric field intensity: 0.01v/m Magnetic field intensity: 0.001μT Frequency range: Power density: 50MHz-5GHz Electric field intensity: 20Hz-100MHz Magnetic field intensity: 20Hz-1MHz Power supply: 3 x AA 1.5V battery (not included) Package Includes:(2 Pack) 1 x Electromagnetic Radiation Detector