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Indications and Functions
LC Display
In normal mode, the display is switched off. However, if
the electrochemical sensor detects carbon monoxide, the
LCD shows the determined CO concentration in ppm/parts
per million (values between 30 ppm and 999 ppm are
displayed).
Memory Function with highest Level Indication
If carbon monoxide has been detected during your
absence, but the CO detector is already reset to normal
mode since any CO contamination cannot be detected
anymore, the device stores the determined CO peak
value.
Press the TEST/RESET key (4) for approx. 5 sec to
display a possibly stored highest level.
Press the TEST/RESET key once again. The CO detec-
tor returns again to normal mode.
The highest level memory is deleted by pressing the
TEST/RESET key or by exchanging the battery or when
an alarm is triggered again.
Battery Warning
When the battery voltage becomes weak, the CO detector
starts to beep (approx. every 30 sec), both LEDs flash and
the display shows Lb (low battery). The CO detector is now
only operable for another 7 days approximately. Thus,
exchange the batteries as soon as possible!
Operation
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