ECOTEST DKG-21 M Operating Manual page 71

pressed for about 5 s to start programming.The low-
order digit will start blinking on the LCD.
Set an appropriate value of the low-order digit by
shortly pressing and releasing the THRESHOLD button.
Press shortly the MODE button to proceed to programming
of another digit, the latter will start blinking in its turn.
The necessary value of the digit is set with short
pressing and releasing the THRESHOLD button.
After the last digit of the threshold level is set and at
next pressing of the MODE button, the LCD will blink
four times, indicating that the new value of the threshold
level has been fixed, and the dosimeter will return
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