Accuracy: electric: 1V/m, magnetic0.01T Range: electric: 1~1999V/m, magnetic0.01~19.99T Alarm Threshold: electric: 40V/m,magnetic 0.4T Sampling time: 5Hz~3500MHz Operating Temperature: 0C~50C Operating Humidity: 80% Operating voltage: 9V Dimensions: 63.6 * 31 * 125.8mm Weight: 146g 1.TWO USESOne instrument with two uses, the emf meter can test the electric field and the magnetic field radiation at the same time. MG/T for testing magnetic field radiation, V/m for testing electric field. 2.AUTO ALARMSound-light alarm, When the electric field value exceeds 40V/m, and the magnetic field exceeds 0.4T or 4mG, the instrument will alarm automatically, you can long press the "AVG/VPP" button to turn off the sound. 3.RADIATION ASSESSMENTRadiation assessment, remind you whether the radiation value is safe or not, It is used to test and learn electromagnetic radiation situation indoor and outdoor. Applicable for testing TVs, computers, refrigerators, printers, microwave ovens, cell phone towers, low-frequency appliances, ghost hunting, etc. 4.ONE-KEY LOCKData locking, one-key lock of the radiation value. LCD display of the values for easier reading.