LED keypads have indicator lights (Light Emitting Diodes) that
represent doors, windows, rooms, motion detectors, etc. For example:
if light number one is on, and the number one light represents
your back door, then that door is open.
Keypads with English Text displays would display the words "faulted
Back Door" (if the back door is open) on a liquid crystal
display screen (LCD display). Larger commercial systems may use
a brighter vacuum tube display. Text keypads will display service
messages if there is a problem, and they indicate and verify the
commands you enter. They also prompt you to the next step you need
to take to complete a command. A command might be to arm/disarm
your system, change your access code or reset a smoke detector.
LED keypads are less expensive than English Text keypads and they
work just fine, but they are not as user friendly.
Keypads come in white and off-white.
In most cases actual use of your alarm system is simply a matter
of turning it on and off.