ECOTEST MKS-05 TERRA Operating Manual page 30

To start programming, press the THRESHOLD button and hold it pressed (circa six
seconds) until the low-order digit starts blinking on the LCD. Set the necessary value of the
low-order digit by successive pressing and releasing the THRESHOLD button. Press shortly
the MODE button to program the next digit, which will start blinking at that. Other digits are
programmed likewise.
The value of the preset threshold level is fixed after all digits are programmed by short
pressing of the MODE button. To fix a new value of the threshold level, set all digits on the
LCD by pressing the MODE button, even if the values of the high-order digits are not
changed. Double extinction of the LCD will indicate that the programmed level is fixed.
Press the THRESHOLD button and hold it pressed to check the value of the fixed DER
threshold level. The threshold level value will appear on the LCD in two seconds.
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