{TAIL ~ The sensor} and electrical circuit are mounted within a housing adapted for mounting to {HEAD ~ a mounting surface} 
{ TAIL ~ The sensor } and electrical circuit are mounted within a housing adapted for mounting to { HEAD ~ a mounting surface }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD