After opening the door, the user may manually “flip” switch 40, changing {HEAD ~ apparatus} 38 from {TAIL ~ an “OFF” state} to an “ON” state 
After opening the door , the user may manually “ flip ” switch 40 , changing { HEAD ~ apparatus } 38 from { TAIL ~ an “ OFF ” state } to an “ ON ” state
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH