[One EMF Meter with Two Functions]: Test the electric field and magnetic field strength at the same time [Sound-Linght Alarm]: When the test result exceeds the safe value, the instrument will automatically sound an alarm [Easy to Use and Operate]: Data retention and clear LCD display, one key to lock the radiation value, easy to read the value, radiation assessment can remind you whether the radiation value is safe [Large and Clear LCD Display]: Equipped with a built-in electromagnetic radiation sensor. After being processed by the control microchip, it can display the radiation value clearly on the LCD screen [Application Range]: TV, induction cooker, rice cooker, refrigerator, computer, household appliances, electrical wires, etc. Electromagnetic radiation detectors are mainly used in electrical appliances in life, which can effectively help people stay away from radiation sources and protect them from radiation hazards Specifications: Model: ET825 Material: ABS Electric field: Accuracy: 1V/m-1999V/m. Frequency range: 5Hz -3500MHz Alarm threshold: >40V/m Resolution: 1V/m Magnetic field: Accuracy: 0.01T-99.99T Alarm threshold: >0.4T Resolution: 0.01T Response time: 0.4S Battery model: 3 x 1.5V AAA batteries (not included) Package size: 15cm7.8cm3.7cm Package weight: 165.8g Note: The data are all measured manually, please allow 1-3cm error in kind. Due to differences in light and display, there may be some color differences, please refer to the actual item received.