Karman 3GAS+ ALARM Mode D'emploi page 5

After a few seconds you will hear the 40 seconds during pre-alarm,
wich will be followed by the alarm, if you keep on steaming the gas
into the casing.
+ Option:
Because some gases rise and some gases fall, it is possible to
improve the operation of the additional gas alarm by placing an
extra (optional) sensor that can be mounted at a different height or
position.
The extra sensors detect all the same gases as the main alarm. It is
possible to connect 2 extra sensors per main alarm for example on
another height or in a different room.
There are 2 extra sensors available:
• Broad spectrum: detect the same gases as the main alarm
• Specific CO: For faster CO detection.
For faster detection of CO we recommend installing the additional
CO sensor to be installed at the top, As CO gas is lighter than air.
Operation:
Press lightly on the top of the device. (the part that shows the flame)
The 3Gas+ alarm is activated and runs an automatic test to verify
proper operation. For a good result the LED lights up briefly and a
long beep follows. After this, the sensor technology is calibrated
which is indicated by the illumination of the green LED. After calibra-
tion, the green LED stays on. The self-test lasts for 2 to 4 minutes.