Features 1、3 In 1 EMF Meter: Can be used to test magnetic field radiation (mG/μT), electric field (V/m), and ambient temperature (°C/°F), meet your different needs. 2、Accurate Measurement: Equipped with a built in electromagnetic radiation sensor, the tester provides accurate measurement and displays the radiation value on a clear LCD display. 3、Sound And Light Alarm: When the detection result exceeds the safe value (0.4μT (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. 4、Portable 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. 5、Wide Range Of Applications: measuring the radiation of TVs, induction cookers, rice cookers, refrigerators, computers, electrical appliances, wires, etc. Specification Item Type: EMF Meter Material: ABS Frequency Range: 5Hz-3500MHz Magnetic Field Strength Measurement Range: 0.1-199.9mG / 0.01-19.99μT Resolution: 0.1mG / 0.01μT Alarm Threshold:; 4.0mG /; 0.4μT Electric Field Strength Measurement Range: 1-1999V/M Resolution: 1V/M Alarm Threshold:; 40V/M Ambient Temperature Measurement Range: 0~50℃/ 32~122℉ Resolution: 1℃/℉ Accuracy: ±1.5℃/3℉ Power Supply: 1 x 6F22 9V battery (not included) Working Environment: 0-40℃/32-104℉, 45%-80%RH Automatic Shutdown: 15 minutes of no operation Item Size: About 19.2 x 5.38 x 3.5cm / 7.56 x 2.12 x 1.38in Packing Size: About 23 x 8 x 5cm / 9.06 x 3.15 x 1.97in Package Weight: About 200g Package List 1 x Radiation Detector