An infant warmer includes a heater canopy comprising a. In one embodiment, such as in a W-CDMA system, a receiver receives one or more signals from remote stations, each signal comprising a scrambling code associated with one of a plurality of code groups, each code group identified by a unique series of a synchronization codes. The attenuation of the sensor reflector radiation enables a report on the seat position of a person in the radiation path. At least one connection conductor is joined to the metal layer by welding, in particular laser microwelding.