A first device receives a first message from a second device. The contactseparation mechanism includes a pair of contactseparation members and a synchronous moving mechanism. A transmitter is then structured to transmit or broadcast the partially processed signal to a receiver, where the signal is then fed to a post-transmission processing module. The individual packages are mounted in various arrays on a support DBC board and heat sink. Further, the first and second channels are disposed side by side. The pressure-generating chambers may be separated into a plurality of groups.