Description Automatic alarmAudible alarm, when the test result exceeds the safety value, the instrument will alarm automatically. Data LockOne-touch lock of radiation value. LCD displayLCD display of values for easier reading. Easy to use and carryFashionable design, easy handy operation, it is easy to carry and carry out measurements in the field. A instrument with two usesit can test electric field and magnetic field radiation at the same time. Overview :This meter can test electric field radiation and magnetic field emission to achieve the optimal test result. It is used to test and learn electromagnetic radiation situation indoors and outdoors. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the LCD digital screen after control micro-chip processing. Specifications:Material: PlasticWeight: 165g/5.8ozColor: As pictures showSize size: 125 * 30 * 65mm/4.9 * 1.2 * 2.6in Unit: V/m (electric field); T (Magnetic Field) Accuracy: Electrical: 1V/m; Magnetic: 0.01TRange: Electrical: 1-1999V/m; Magnetic: 0.01-19.99 TAlarm threshold: Electrical: 40 V/m; Magnetic: 0.4 TDisplay: 3-1/2 LCD displayTest bandwidth: 5 Hz to 3500 MHzSample time: approx. 0.4 secondsTest mode: Bi-module synchronous testOver-range indication: LCD displays 1Operating temperature: 0C-50COperating humidity: relative humidity List of packages: 1 * Electromagnetic Radiation Detector1 * User Manual