Specifications: Appropriate size: easy to operate with one hand. LED display: large and clear screen, easy to read the value. Backlight function: you can see the value clearly in the dark. Can be used to detect magnetic field radiation, electric field radiation and temperature. Multi-unit conversion: mG/μT/(V/M)/Celsius/Fahrenheit. Data retention and maximum measurement: one click to lock the data. Sound and light alarm: when the result exceeds the safety value, the detector will automatically alarm. Widely used in radiation measurement of TV, induction cooker, rice cooker, refrigerator, computer, electric wire, etc.. Item Name: Electromagnetic Field Detector Material: ABS Battery: 1 x 9V 6F22 Battery (Not Included) Automatic Shutdown: No Operation within 15 Minutes Working Environment: 0-40 Degree Celsius (32-104 Degree Fahrenheit), 45% - 80% RH Frequency Range: 5Hz - 3500MHz Magnetic Field Strength Measuring Range: 0.1-199.9mG/0.01-19.99μT Resolution: 0.1mG/0.01μT Alarm Threshold Value: >4.0mG/>0.4μT Electric Field Strength Measuring Range: 1-1999V/M Resolution: 1V/M Alarm Threshold Value: >40V/M Environment Temperature Measuring Range: 0-50 Degree Celsius/32-122 Degree Fahrenheit Resolution: 1 Degree Celsius/1 Degree Fahrenheit Accuracy: ±1.5 Degree Celsius/3 Degree Fahrenheit Features: LED Display, Backlight, Easy to Operate Total Size: 19.2cm x 5.38cm x 3.5cm(Approx.) Notes: Due to the light and screen setting difference, the items color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: (Battery Not Included) 1 x Electromagnetic Field Detector 1 x User Manual