Device for detecting fogging on a surface of a vehicle

The device has a circuit board (44) on which a humidity sensor (46) is located, and provided with a set of wrap connection components (40). Electrical conductors are provided on a surface (16) for thermal coupling of the sensor with the surface. The conductors are provided with another set of wrap connection components (36) for electrical connection with the former set of components and for the thermal connection with the sensor.