heimgard Combustible Gas Detector, Быстрый старт

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Mounting
Before use, confirm whether the gas that is to
be detected is heavier or lighter than air.
If the gas has heavier density than air, install the
device 30-100 cm above the floor with less than
150 cm from the gas source. LPG for example.
If the gas has lighter density than air, install the
sensor install the device 30-100 cm below the
ceiling and less than 150 cm from the source.
Natural gas, manufactured gas, marsh gas, etc.