1. An interior rearview mirror for a motorized vehicle, said mirror comprising: a mirror housing with a mirror member; a mirror support connected to said mirror housing; at least one sensor for sensing solar radiation entering the interior of the motorized vehicle through a windshield, said sensor coupled to a control unit of an air conditioning device of the motorized vehicle; a cover connected to said mirror support, wherein said at least one sensor is positioned at said cover; said cover comprises a holder to which said at least one sensor is connected; said cover comprises at least one cover portion angularly positioned relative to said holder and covering an underside of said mirror support.