ECOTEST DKG-21 Operating Manual page 17

3.2.33.3 Coupled with the ASIDC SW, the dosimeter enables:
- blocking the option to turn the dosimeter off until its accumulated data
is read;
- blocking the modes of indication (DER, DER threshold, DE, DE
threshold, clock and alarm clock); change (DER threshold, DE threshold)
and adjustment of clock and alarm clock settings.
3.2.33.4 The dosimeter features an option to record a sign of DER
outranging the upper limit of the measurement range during device
operation in the non-volatile memory and send it to the ASIDC SW.
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