NEW Electromagnetic Radiation Detector EMF Meter Tester Features:Brand new and high quality Easy to use, low cost Great for home, office, computer room, control room, power lines, cables, monitors, etc.Measure the electromagnetic radiation from mobile phones, computers, copiers, fax machines, air conditioners, fridges, and so on Display readings: three semi-liquid crystal display, maximum reading low-frequency 1999V/M / High Frequency 1999μW/cm2Level: low-frequency V/m, high-frequency: -μW/cm2Measurement time intervals: 0.4 secondsWorking voltage: 9VFrequency range: low frequency: 5Hz-400 KHz, high frequency: 30MHz-2000MHzWorking temperature: -15°C to 60°CDimension: 132 x 69 x 29 mm NOTE: This meter is for testing the electromagnetic radiation. If the equipment like computer with ground loop power, the electromagnetic radiation will be diverted to the ground, then the test will fail. Besides, metal will shield the radiation. If the meter always displays "0" in testing, please replace the battery. ++ Package included ++ 1 x Electromagnetic Radiation Detector1 x User Guide