Thermostat, able to measure the current temperature, accept user set point, and then control Fan and heater. Clock, currently only able to keep the time, but in the future, a time schedule and event schedule will be stored in it and control your house as timed. Television set, control and monitor center. Fire alarm, as time is too limited, we have to use the PC-adaptor as part of the alarm. The light controller is a compound node that can control all the lights and set house mode.
Light controller is the configure master.
Thermostat, fan and heater are of the same system. Thermostat is a configure master. Clock and TV are single nodes that do not belong to any subsystem. When a new light fixture is first powered on in your house, it will broadcast M15, get a valid address from the light controller and then is able to work. User can control the light on the Light Control Panel.