Specification: Item Type: Electromagnetic Radiation Detector Material: ABS Weight: approx. 125g/4.4oz Test scope: Power density: 0-99.999μw/c㎡ Electric field intensity: 0-999.99 V/m Magnetic field intensity: 0-99.999μT Test Accuracy: Power density: 0.001μw/c㎡ Electric field intensity: 0.01 v/m Magnetic field intensity: 0.001μT Frequency range: Power density: 50MHz-5GHz Electric field intensity: 20Hz-100MHz Magnetic field intensity: 20Hz-1MHz Battery: 3 x AA batteries (excluded) Purpose: radiation detection of mobile phones, computers, TVs, refrigerators, high voltage lines, etc. Package List: 1x Electromagnetic Radiation Detector 1 x Instruction Features Large Screen: The electromagnetic radiation detector screen is large, which makes reading data more convenient, and the backlight can be turned on or off. EASY TO USE - The environmental radiation detector adopts key operation, just like a remote control. This tester has 4 modes, namely mute and alarm mode, test and pause mode. High Quality Shell: The radiation tester shell is made of high-quality ABS material, with good heat resistance, excellent cold resistance, high strength and good toughness. MULTIFUNCTIONAL - The electromagnetic radiation detector can meet the needs of family life detection, substation detection, mobile signal tower detection and so on. HIGH PERFORMANCE - The magnetic field tester has the advantages of high sensitivity, wide range, durability and portability. Daily use helps to avoid radiation hazards.