An apparatus for cooking foods comprises a cooking chamber provided with humidity-detecting device arranged in such a way as to detect the humidity in said cooking chamber, wherein said humidity-detecting device comprises a capacitive sensor; a system for controlling the humidity in a chamber for cooking foods comprises a humidity detecting device provided with a capacitive sensor. When a store hit occurs, the current value is retrieved from the local cache. A signal quality rater measures multiple index values to rate the quality of a reflected light signal as the settings are changed. When the grille is lifted, it automatically stops the blade for increased safety. The package assembly and method are suitable for electrically isolating modules according to IEEE 1394. The abutment surfaces define a minimum spacing of the two mutually facing surfaces of the implant portions, which is bridged over by the sealing body.