Abstract: The invention relates to a device for temperature regulation/limitation in a heat generating installation, said device comprising at least one probe (Tk) that is connected to a regulator (20) which, in turn, is connected to an automatic heating system (40) by means of a communication interface (30). The inventive device is characterised in that the automatic heating system (40) comprises a safety module (41) which compares the temperature detected by the probe, forwarded to the regulator and transmitted from the regulator to the automatic heating system by means of the communication interface, with a maximum admissible safety temperature (TSTB) stored in the safety module (41), and in that, once the safety temperature is reached or exceeded, the safety module (41) generates a cut-off signal which causes the installation to be cut off by the automatic heating system.

Abstract: A housing is mounted on the roof of a vehicle. The housing has a top parallel to the roof of a vehicle and a plurality of sides extending perpendicularly between the top of the housing and the roof of the vehicle. Translucent visual indicating devices are provided on the top and each of the sides of the housing and visually indicate the registration number of the vehicle. A lamp device in the housing illuminates the indicating devices and produces a plurality of colors corresponding to the speed of the vehicle.