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2.1.2 KEYPAD
The Keypad has more than one function and many are self-evident, so only the main
key functions are discussed here.
Figure 2-4
The
ON-OFF
and
PROG/EXIT
keys are toggles. They are often discussed here by
separate function to avoid confusion.
For example, the
ON
key and the
OFF
key are the same key but its function changes
(toggles) between “ON” and “OFF”. All keys but the
ON
key are disabled when the unit
is “OFF”.