A specialized Timer which is used to control other timers. Shows hours and minutes. Up to 26 time intervals may be entered to start, pause or stop other units. (e.g. CC8172-C09). At each set time an ASKII command is issued to start, pause or stop other units. Time intervals or groups of intervals may be repeated up to 99 times or continuously. Horn may be programmed for different patterns or may be silenced. Counts up or down. Shows time of day when not in use. Daisy chaining limited to command signals.