ECOTEST DKG-21 M Operating Manual page 22

is lower than the preset threshold level. At this point, none
of the control buttons of the dosimeter should be pressed.
3.2.31 The dosimeter includes the mode of automatic
power supply testing and its indication:
- power supply range from 2.5 to 2.6 V – segments
(from 1 to 3) start blinking in the right upper corner of the
LCD;
- power supply less than 2.4 V – four segments together
with the indication of audio alarm on the LCD start
blinking as well as audio alarm signal is annunciated.
3.2.32 The dosimeter provides for a self-test of the
LCD and loudspeaker while it is switching on.
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