Electromagnetic Field Radiation Detector Tester Emf Meter Rechargeable Handheld Portable Counter Emission Dosimeter ComputerFeature This meter can test electric field radiation and magnetic field emission to reach the optimal test result. It is used to test and learn electromagnetic radiation situation indoor and outdoor. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the LCD digital display after processing by control micro-chip.One instrument with two uses,it can test the electric field and the magnetic field radiation at the same time.Sound-light alarm,when the test result exceeds the safe value, the instrument will alarm automatically.Data locking,one-key lock of the radiation value.LCD display of the values for easier reading.Radiation assessment, remind you whether the radiation value is safe or not.Keeping dataLow electricity promptAuto power-offFashionable design,easy on-hand operation, its easy to carry and make field measurement.Specifications UnitV/m TPrecision1V/M 0.01TRange1-1999V/m 0.01-19.99TAlarm Threshold Value40V/m 0.4TReading Display3-1/2 -digital LCDTest Bandwidth5Hz-3500MHzSampling TimeApprox 0.4 SecondsMeasurement ModeDual mode at the same timeOver Range IndicationLCD display the maximum measurement rangeOperating Temperature0C-50C/30~122Operating HumidityRelative Humidity 80%Power Supply3.7V Lithium Battery Item Size133X60X25MMPackage Size150X80X40MM