Abstract: A device, means, and method for the unpredictable remote control of at least one remote device is provided. A device may include a transmitter, an aperiodic timer, and a command sequence generator to the generated command sequence as controls signal in response to a timer signal from the aperiodic timer or a trigger signal. A method is also provided, which includes the Steps of generating an aperiodic timing signal, generating or retrieving a command sequence in response the aperiodic timing signal or a trigger signal and transmitting the command sequence. The Steps for learning a command, and self-testing the device, and generating the trigger signal based on a sound pattern detected by a sound detector are also described.

Abstract: The invention provides a circuit for use with a standard bidirectional databus having an active current device providing a first logic level in combination with a selectably jumpered passive resistance device providing a second logic level, the active element responsive to an enable signal whereby tristating the bus write drivers and reading the bus will sense a configuration determined by selection of the jumper.