indicating devicef & t.; r aa sensorvorrichtung affiliated messwertgeber, especiallyf & t.; r asensor for monitoring and professional;the indoor air, and a range of the measured readings representeda first lamp is associated with a different range of valuesa second lamp is attached and which rangesdifferent degrees of r & r for current concerns persons;the readings represented are characterised by the fact that each of thetwo light bulbs the viewer what & auml ndliche symbolism assigned;is the degree of safety, especially the burdenthe indoor air with the gas to be measured, in general, what & auml; ndlich expr & t.; ckt.
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