Function Keys; 12/24 Hour Time Setting - La Crosse Technology WS-7391UD Instruction Manual

2) Manually (performed throughout the programming mode.
When programming, the manual setting of time and date is not
necessary and can be skipped. Any time information programmed
will be over-written by the reception of the WWVB signal.

FUNCTION KEYS

There are four buttons on the WS-7391U, two on the front and two
on the back. The front two buttons are the "CHANNEL" button
(for selecting different remote temperature sensors if added) and
the "RESET" button (for resetting the minimum and maximum
temperatures). The two back buttons are the "SET" button (to
enter the programming mode and confirming selections) and the
"+" button (to select different settings once in the programming
mode).
I. 12/24-Hour Time Format
1. Press and hold the "SET" button (on the back of the
clock) for 2 seconds or until "12h" or "24h" flashes.
2. Press and release the "+" button to select 12-hour or
24-hour ("military") time format.
3. Press and release the "SET" button to confirm and
advance to the time setting (skip step 1 and 2 in
section II if continuing).
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