Directed Electronics 554R Owner's Manual page 13

Button
The LCD backlighting will turn on when pressed for less than one
second; when held for more than five seconds the transceiver will
enter adjustment mode allowing the setting of the clock, timer
mode, and audible melody selection. For more information, please
refer to the Function Button Configurations section of this guide.
and Buttons
The remote start function of the system is controlled by pressing
these buttons simultaneously for one second.
and Buttons
When pressed simultaneously these buttons activate remote start
timer mode, engaging the remote start function every 24 hours.
and Buttons
When pressed simultaneously these buttons display the internal
temperature of the vehicle on the LCD.
and Buttons
When pressed simultaneously with the system armed, the system
enters temperature auto start mode and automatically remote starts
the vehicle if the temperature inside the vehicle drops below
0 degrees Fahrenheit.
note: Disarming the system while in temperature auto start
mode will cause the system to exit this mode.
and Buttons
The numeric display toggles between the time of the day and the
alarm clock when these buttons are pressed simultaneously.
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