An electrically heated smoking system for receiving an aerosol forming substrate includes a heater for heating the substrate to form the aerosol. The receptacle portion is a blow molded plastic, while a outer layer comprising a shrink-wrap graphics carrier is applied over the receptacle and cap. The differential-pressure flow meter includes specific control boards disposed near pressure-sensing parts installed in the respective pressure-sensing device and a main control board disposed in a board installation space formed inside the base member. This ESD diode can be shared by circuitry on both semiconductor dies of the stack thereby saving space and reducing die area required by ESD protection circuitry. Multi-layer composite coatings and coated substrates are also provided.