Features:The EMF meter can measure the strength of electric and magnetic fields to achieve the best test results.Widely used for indoor and outdoor electromagnetic radiation testing and learning.Suitable for measuring electromagnetic motor, measuring low frequency equipment and high frequency radiation equipment.An instrument serves two purposes. It can measure both electric and magnetic radiation.Sound and light alarm, when the test result exceeds the safety value, the instrument automatically alarms.Data lock, one key lock radiation value, easy to read the value.Measure ambient temperature, use 2 temperature units ( C and F).Radiation assessment, to remind you if radiation levels are safe.Fashion design, easy to operate, easy to carry and field measurement.Specification:100% brand new with high qualityUnit: V / m (electric field), T (magnetic field)Accuracy: Electrical: 1V/m, Magnetic: 0.01TRange: Electrical: 1-1999V/m, Magnetic: 0.01-99.99TAlarm threshold: electrical: 40V/m, magnetic: 0.4TDisplay: 3-1/2 LCD displayTest bandwidth: 5Hz-3500MHzSampling time: about 0.4 secondsTest mode: dual module synchronous testOverload indication: the maximum value of the measuring range on the LCDWorking temperature: 0C-50CWorking humidity: relative humidity <80%Working voltage: 3.7VPower supply: 3.7V 600mAh lithium batterySize: about 133 * 60 * 25 mm / 5.24 * 2.36 * 0.99 inchesPackage Included:1 x Electromagnetic Radiation Tester1 x User ManualNote:The colors may be a little difference for the different monitor display. Please check as much as possible to make sure the item is the one that you need.Please allow 0.5-1 inch difference due to manual measurement.(1inch=2.54cm)