AEL 101 Instrucciones De Uso página 9

In the above setting modes, press "ALTITUDE" button or
"compass" button to change or scrolls the value. Hold
the "ALTITUDE" button or "compass" button for  second
will increase/decrease digits in great steps. Press the
"SET" button to accept the change and advance to the
next setting mode. Continue to press the "SET" button
to toggle through the setting mode until return to the
normal Mode
4. COMPASS Mode
4.1 Precautions when using the Compass
• Keep your digital compass away from magnets or
appliances which may contain magnetic objects, such
as: mobile phones, speakers, motors, etc.
• This compass like most magnetic compasses, points to
the magnetic North, which is slightly difference from
the true North. Check section '. Magnetic Declination'
for more information.
• To achieve a accurate result, you should avoid
measuring a direction on the following conditions:
- The compass is too close to magnetic objects
- The compass is too close to metal objects
- The compass is too close to an electrical appliance.
- The compass is inside a moving object or a concrete
building
4.2 Magnetic Declination
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