Feature 13 In 1 EMF Meter: Can be used to test magnetic field radiation (mG/T), electric field (V/m), and ambient temperature (C/F), meet your different needs. 2Accurate Measurement: Equipped with a built in electromagnetic radiation sensor, the tester provides accurate measurement and displays the radiation value on a clear LCD display. 3Sound And Light Alarm: When the detection result exceeds the safe value (0.4T (4mG) or 40V/m), an audible alarm will be issued and the green light will turn yellow. When the radiation reaches 40mG, the light will turn red and the sound alarm will be stronger. 4Portable Design: LCD backlight and flashlight function, you can see the value clearly in the dark. Light weight and in small size, easy to store and carry, suitable for different place. 5Wide Range Of Applications: measuring the radiation of TVs, induction cookers, rice cookers, refrigerators, computers, electrical appliances, wires, etc.Item Type: EMF MeterMaterial: ABSFrequency Range: 5Hz-3500MHzMagnetic Field Strength Measurement Range: 0.1-199.9mG / 0.01-19.99TResolution: 0.1mG / 0.01TAlarm Threshold:; 4.0mG /; 0.4TElectric Field Strength Measurement Range: 1-1999V/MResolution: 1V/MAlarm Threshold:; 40V/MAmbient Temperature Measurement Range: 0~50/ 32~122Resolution: 1/Accuracy: 1.5/3Power Supply: 1 x 6F22 9V battery (not included)Working Environment: 0-40/32-104, 45%-80%RHAutomatic Shutdown: 15 minutes of no operationItem Size: About 19.2 x 5.38 x 3.5cm / 7.56 x 2.12 x 1.38inPacking Size: About 23 x 8 x 5cm / 9.06 x 3.15 x 1.97inPackage Weight: About 200g . Package List1 x Radiation DetectorNote1. Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you.2. Please allow 1‑3cm measuring deviation due to manual measurement.