If the detection signal is outside the preselected range of air pressure, the controller unit transmits an alert signal to a transmitter means for {HEAD ~ remote transmission} of {TAIL ~ an alarm signal} to an alarm means 
of
If the detection signal is outside the preselected range of air pressure , the controller unit transmits an alert signal to a transmitter means for { HEAD ~ remote transmission } of { TAIL ~ an alarm signal } to an alarm 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 OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH