Abstract: A bipole is fitted in a warning system socket for removably receiving a hazard warning system in order to set one of at least two operating modes of the hazard warning system. An electric characteristic of the bipole can be read out electrically by an electronic control of the hazard warning system via two electric contact pairs which are in contact with each other in the received state of the hazard warning system. In particular, the bipole is used via at least one pair of electric contacts, the pair being generally provided for externally connecting an optical and/or acoustic alarm emitter, in order to read in the electric characteristic of the bipole. The bipole is preferably a passive electric resistor.

Abstract: A danger sensor (100) is described which features a first housing part (110), a second housing part (120), a detector unit (112) for detecting of a danger situation, wherein the detector unit (112) is arranged in or at the first housing part (110), and an electrical connection (114a, 114b) for connecting of at least one supply element (142a, 142b) which provides electric power to the detector unit (112) during operation. The first housing part (110) together with the second housing part (110) is designed so that a holding area is present between the two housing parts (110, 120) for the at least one supply element (142a, 142b), and that the volume of the holding area is variable by means of a volume adjustment element (130). Furthermore, an element (130) is described for adapting a danger sensor to different requirements regarding the power supply; also described is an arrangement for detecting of a danger situation and a method for retrofitting of the power supply to a danger sensor (100).

Abstract: A bipole is fitted in a warning system socket for removably receiving a hazard warning system in order to set one of at least two operating modes of the hazard warning system. An electric characteristic of the bipole can be read out electrically by an electronic control of the hazard warning system via two electric contact pairs which are in contact with each other in the received state of the hazard warning system. In particular, the bipole is used via at least one pair of electric contacts, the pair being generally provided for externally connecting an optical and/or acoustic alarm emitter, in order to read in the electric characteristic of the bipole. The bipole is preferably a passive electric resistor.

Abstract: A danger sensor (100) is described which features a first housing part (110), a second housing part (120), a detector unit (112) for detecting of a danger situation, wherein the detector unit (112) is arranged in or at the first housing part (110), and an electrical connection (114a, 114b) for connecting of at least one supply element (142a, 142b) which provides electric power to the detector unit (112) during operation. The first housing part (110) together with the second housing part (110) is designed so that a holding area is present between the two housing parts (110, 120) for the at least one supply element (142a, 142b), and that the volume of the holding area is variable by means of a volume adjustment element (130). Furthermore, an element (130) is described for adapting a danger sensor to different requirements regarding the power supply; also described is an arrangement for detecting of a danger situation and a method for retrofitting of the power supply to a danger sensor (100).