A turbocharged internal combustion engine is provided with a diverter valve arranged to divert part of the exhaust gas flow along a conduit for introduction into a turbine region. Conductive traces, which can be formed from a stackup of metal layers or a single metal layer, can be protected with an additional photoimageable passivation layer of a material such as an organic polymer. Firstly, the embedded controller reloads a memory parameter value corresponding to the counting value. One of the trains creates tool rotation drive and the other of the trains creates tube cutting. In yet another embodiment of the invention, a wireless communication system includes a wireless intercom unit and a remote switch for providing user input information to the intercom unit.