The invention relates to a filling level sensor for a fuel tank 2, comprising a ceramic mounting plate 5 with a resistance network 6 arranged thereon and a contact structure 8 for the detection of an electrical filling level signal, and a cover 9 connected to the mounting plate 5, the cover 9 and the mounting plate 5 forming a housing 10. The device is generally comprised of a imager housing and a display housing disposed on opposite ends of a modular, flexible cable. , brown adipocytes, and adipogenesis. The compactor device compacts the approved objects and has continuous, non-cyclic operation. The light source is electrically connected to the wireless electric receiving module.