{TAIL ~ The system} includes {HEAD ~ a circuit board}, a solid state switching device, a heat sink, and a temperature sensor 
{ TAIL ~ The system } includes { HEAD ~ a circuit board } , a solid state switching device , a heat sink , and a temperature sensor
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH