Upon receipt of {HEAD ~ the alarm signal}, the alarm means issues an audible stimulus or a vibratory stimulus having sufficient intensity to awaken the patient as {TAIL ~ a reminder} to the patient to adjust the mask 
Upon receipt of { HEAD ~ the alarm signal } , the alarm means issues an audible stimulus or a vibratory stimulus having sufficient intensity to awaken the patient as { TAIL ~ a reminder } to the patient to adjust the mask
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH