Patent ID: 8336576

Claim:
A compressed air supply device for motor vehicles, comprising: a compressor that is switchable between an idling phase and a load phase; control electronics; an air dryer, said air dryer including an inlet duct for undried compressed air, and an outlet duct for dried compressed air; a multi-circuit safety valve in communication with said outlet duct of said air dryer via a compressed air line; and a moisture sensor mounted in a bypass duct of said compressed air line for sensing relative humidity of compressed air flowing in said compressed air line, said bypass duct being in communication with said compressed air line via a condensate drain line that provides a communication path between said bypass duct and said compressed air line, said communication path being separate from an inlet duct and an outlet duct of said bypass duct; further comprising a holder for said moisture sensor in said compressed air line, said holder in communication with said bypass duct; wherein said holder is directly coupled to said condensate drain line.