ECOTEST MKS-05 TERRA-P+ Operating Manual page 26

5.2.2 Prepare the dosimeter for operation by doing the following:
- unpack the dosimeter;
- open the battery compartment and make sure the batteries are inserted;
- insert two AAA type batteries, observing the polarity, if there are none.
Note. The dosimeter turns on automatically if the batteries are inserted for the first time.
5.2.3 Press shortly the MODE button if the batteries are already inserted into the
battery compartment. The dosimeter should enter the mode of gamma radiation DER
measurement at once, which is shown by the blinking light-emitting diode opposite
the appropriate mnemonic symbol below the LCD, and by audio signals following
the detection of every gamma quantum. All the digits of the LCD will be blinking
until the completion of measurement interval.
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