Both the control circuit and the alarming device are connected to the signal processing circuit, and either of which are actuated depending upon {HEAD ~ a level} of the signal obtained from {TAIL ~ the sensing means} 
Both the control circuit and the alarming device are connected to the signal processing circuit , and either of which are actuated depending upon { HEAD ~ a level } of the signal obtained from { TAIL ~ the sensing means }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL