This meter displays the EMF radiation value on the clear LCD digital display after processing by control micro-chip. Testing magnetic field radiation with optional units mG/µT, the electric field with unit V/m. This emf meter can not test the RF value.
 
When the testing result exceeds the value(0.4µT (4mG) or 40V/m), the screen will turn red and the indicator will be flashing, and the buzzer will alarm. If you’re testing some quiet areas you can mute the buzzer.

Large and back-light LCD is clear for viewing. Auto power off after 5 minutes without operation.
 
The meter is rechargeable using a micro USB cable (included)