Feature:1. Dual Purpose Function: EMF meter can test the electric field and the magnetic field radiation at the same time. When the test result exceeds the safe value, the instrument will alarm automatically.2. Built In Electromagnetic Radiation Sensor: Equipped with a built in electromagnetic radiation sensor, which can display the radiation value on the clear LCD digital display after processing by control micro chip.3. Excellent Performance: With data hold function, one key can lock the radiation value and easily read the value. Radiation assessment can remind you whether the radiation value is safe.4. Easy To Use and Operate: Electromagnetic radiation detector is mainly used for electrical appliances in life, which can effectively help people away from radiation sources and them from radiation hazards!5. Electromagnetic Radiation Test: Radiation Detector suitable for mobile phone, computer, TV set, refrigerator and high voltage cable radiation test.Specification:Item Type: Electromagnetic Radiation DetectorMaterial: ABSColor: BlackMeasurement Range: 1V/m-1999V/mMeasurement Accuracy: 1V/m,0.01utMagnetic Field: 0.01μT -99.99μTReading Display: 3-1/2 digits LCDElectric Field: 40V/mMagnetic Field: 0.4μTTest Bandwidth: 5Hz-3500MHzSampling Time: About 0.4 secondsTest Mode: Dual module synchronous testOperating Temperature: 0~50℃ / 30℉~122℉Operating Humidity: Relative humidity Power Supply: 3 x 1.5V AAA batteries (not included)Electromagnetic Radiation Test: Cell phone, computer, TV, refrigerator and high voltage cable radiation testPackage List:1 x Electromagnetic Radiation Detector1 x User ManualNote:Manual measurement, please allow 1‑3cm error