Device for sensing and/or signalling (1) a humidity industry of humidity-permeable devices (2),in particular water flow, in particular in a humidity chamber (13) and/or in a floor heating system, including an electronic humidity sensor (3),with a conductive moisture absorbent (4),two electrical conductors (5) in surface medium (4),in particular in a longitudinal direction (6) of the surface medium (4),are positioned at a predetermined distance (7) to each other and connected to the electronic humidity sensor (3).
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