9 system applications manager; system controller module; remote control device; control panels; telephone consoles; wireless remote; telephone gateway device; thermostats, utility communications interface; energy management controller; security system controller, power generators; cogeneration system; adapters, telephone; intercom; telephone answering machine; television; video disc player; video cassette recorder; closed circuit camera; audio receiver; audio speaker; audio tuner; phonograph turntable; audio tape player; audio compact disc player; audio equalizer; personal computer equipment; gas, motion and environmental sensors; and electric lighting controller