Wide Application: EMF Meter Is An Essential Measurement Tool For Material Surface Treatment Engineering, Which Can Test Tvs, Computers, Microwave Ovens Refrigerators, Printers, Wire Towers, Cell Phone Towers, Low-Frequency Household Appliances And Ghost Hunting, Non-Conductive Coatings On Metal Surfaces, Etc. Easy To Carry, Can Effectively Reduce The Risk Of Radiation That Endangers The Health Of Your Family. Accurate Measurement: 3-In-1 EMF Detector With Composite Probe, Testing Magnetic Field Radiation In mG/T And Electric Field In V/M, With Lcd Digital Display Backlight, Maximum And Minimum Value Lock, Data Reset, Data Calibration, Unit Conversion And Automatic Shutdown, Etc. Alarm: Radiation Detector Default Alarm Value (Over 1500um/Below 0um). Press Mode Key For A Long Time To Enter Alarm Setting Mode. Short Press Mode Key To Switch To High Or Low. You Can Adjust The Alarm Value And Set Any Alarm Thickness Value. Multifunctional: EMF Readertrifield Is A Device That Automatically Detects The Performance Of Substrates And Coating Thickness Through Electromagnetic Induction And Eddy Current Effect. With Multi-Function Such As Single Point Mode, Continuous Fast Measurement Mode, Automatic Recognition Of Substrate Properties, Maximum/Min Function Lock, User-Defined Calibration, Etc., The Detector Will Automatically Shut Down After 10 Minutes Of No Operation. You Will Get: 1 * EMF Meter, 3 * Aaa Batteries And 1 * User Manual, We Are Committed To Build A Professional And High Quality Meter. If You Have Any Questions, Please Feel Free To Contact Us, Our Professional After-Sales Team Will Solve Your Problems In Time.