Multiple Measurement Modes: This EMF detector can test Electric Field(1V/m~1999V/m) and Magnetic Field(0.01~99.99T) strength at the same time and Ambient Temperature(32~122/0~50). The large clear LCD display shows the values for easy reading three at the same time. It does not measure RF Radiation. Sound-Light Alarm: When the test result exceeds the safe level ( 40V/m or 0.4T), the meter will beep an alarm automatically, the screen will turn red and the indicator will be flashing. This lets you know the radiation emitted is high enough to be a concern. Protect Yourself from Radiation Threat: You can measure the home appliances, tv, pc, fridge, microwave oven, etc. When you put the emf detector close to a test magnetic and electric field, it displays a bar graph of the intensity of the magnetic and electric fields. It also shows a Good/Bad prompt for the test on the screen. Feature Rich: This meter has a lot of features, Easy to read LCD backlight, Average or peak value reading, One key reading freeze, Return to zero, Switch (/ ), Low battery indication, Buzzer switch, Auto turns off after 5 minutes without operation. What You Get: 1 x EMF meter (NOT MEASURE RF RADIATION), 1 x Lithium battery charging cable