Electric field radiation: (1) Range: 1V/m-1999V/m (2) Accuracy: 1V/m (3) Alarm threshold: 40V/m. Magnetic field radiation: (1) Range: 0.01T-99.99T (2) Accuracy: 0.01T (3) Alarm threshold: 0.4T. Accurate measurement: Equipped with a built-in electromagnetic radiation sensor. After processing by controlling the electronic chip, the radiation value can be displayed on a clear LCD digital screen. Magnetic field radiation tests are performed in mG/T units optionally, and electric field tests are performed in V/m units. This electromotive force meter cannot test RF value. Multi-function: Locked values, LCD graphic display of radiation value trends, temperature (C/F) and magnetic field units (T/mG) switchable. Sound and light alarm: When the test result exceeds the safe level (40V/m or 0.4T), the meter will automatically beep, the screen will turn red and the indicator light will flash. This lets you know that the radiation emitted is high enough to be a problem. Applications: Typically used to test TVs, computers, printers, microwave ovens, refrigerators, cell phone towers and other low-frequency home electronics. Feature: Electric Field Range: 1V/m-1999V/m Accuracy: 1V/m Alarm Threshold: 40V/m Magnetic Field Range: 0.01T-99.99T Accuracy: 0.01T Alarm Threshold: 0.4T Reading Display: 3.5-digit LCD Measurement Bandwidth : 5Hz~3500MHz Sampling time: about 0.4 seconds Measurement mode: dual-mode simultaneous measurement Overload indication: the maximum value of the measuring range on the LCD display Operating environment: Temperature: 0~50 Humidity: less than 80%RH Working voltage: 3.7V Power supply: 3.7V lithium battery (not included) Dimensions: approx. 60x25x133mm Note: The data are all measured manually, please allow 1-3cm error due to differences in light and display, there may be some color differences, please refer to the actual item received.