ECOTEST MKS-05 TERRA-P+ Operating Manual page 44

Press the THRESHOLD button and hold it pressed until two digits to the right
from comma start blinking to correct the value of real time, and then release the
button. The proper values of units and tens of minutes are fixed by further pressing
and holding the THRESHOLD button. Press shortly the THRESHOLD button to
correct the value of minutes. Each pressing will change the value per unit. Press
shortly the MODE button to correct the value of hours. Two digits on the left of
comma start blinking at that. The hour value correction is performed likewise. Press
shortly the MODE button once again to exit the mode of real time correction.
6.3.10 Switching audio signaling of registered gamma quanta and beta-
particles on/off
Simultaneously press and release the MODE and THRESHOLD buttons to switch
audio signaling off. A "----" symbol that briefly appears on the digital LCD indicates
that audio signaling is switched off.
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