Power On/Off & Data Hold
Short press this button to turn on the meter.
Press this button fter setup the meter, the reading will be locked, press again can concel it.
Long press this button to turn off the detector.
Average/Peak Value Mode & Buzzer Switch
Short press this button to switch average or peak value mode.
Long press this button to turn the buzzer on or off.
Unit Switch
Short press this button to switch the magnetic field unit between uT and mG.
Large & Clear LCD Display
When electric field's reading more than 40V/m and magnetic field's reading more than 0.4μT/4mG, the screen will turn red, and show "Warning" on display.
