DEI Headquarters Inc. DEI7121 Manuel D’Utilisation

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3.  After unit has entered the proper feature number you want to 

change, press the 

A U 

X

 button toggle through the options. The 

siren chirps according to its current setting.

4.  Turn the ignition OFF to exit feature settings. The siren will 

emit one long chirp.

5.  Inside the menu setting, if without any operation within 10 

seconds, the siren will emit one long chirp and exit feature 

settings.