DK Digital RTU-500, Руководство пользователя

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Countdown function
The device can count down a certain period of time (23
hours 59 minutes max.) and then emit an acoustic
signal.
Ø
In order to activate this function, press the MODE
key four times.
0-00
appears in the upper display,
00
in the lower one.
Ø
If you press the SET key, the hours will flash. Press
the UP /DOWN keys until the required hour is
shown.
Ø
If you press the MODE key again, the minutes will
flash. Press the UP / DOWN keys until the required
minutes are shown.
Ø
Then press the SET key. Now the device starts
counting down the entered time to 0. During that
time the
symbol is flashing in the display. In the
upper display window you see the hours and
minutes, in the lower one the seconds. After one
minute the device returns to normal time display.
Ø
Press the MODE key four times to change back to
the coutdown display.
Ø
If the device has reached the end of entered time,
you will hear a beep. Press any key to cancel that
beep.
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