mfw GF-650 Manual De Usuario página 7

Controls
1.Power and Backlight On/O
Long press the power key for 3 seconds to start the machine, and then long press the power key for 3 seconds to shut it down.
In standby mode, press the power button once to turn o the backlight, and then press the power button again to turn on the backlight.
2.Search Mode
In standby mode, press the mode key once to switch to discrimination mode / press the mode key again to switch to all metal mode.
3.SMART precise positioning
Press smart key in standby mode, and the screen will display - SMART word,
The sample lights up to enter the accurate positioning state, and press the SMART key again to exit the accurate positioning.
4.UP and DOWN Key
In the setting state, press the up key to increase the value,
Press the down key to decrease the value in the setting state.
5. Volume Adjustment Key
Press the Vol key to increase the volume in any state,
Press the Vol key to turn down the volume.
6.Selection Key / Automatic Balance Key / Frequency Selection Key
In standby mode, press GR.BA/SELECT, move the cursor to enter the setting state, the screen displays the corresponding value,
and then press up or down to adjust the required value.
Long press GR.BA/SELECT for 3 seconds, the screen displays 90 values, and the word gr-balance is lit to enter the automatic balance state.
Long press GR.BA/SELECT for 3 seconds to exit the automatic balance.
Press GR.BA/SELECT to display (F1-F7) frequency selection in the automatic balance state or precise positioning state.