a switch including a sensing arm engageable with a second side of {HEAD ~ said membrane} to be displaced in {TAIL ~ response} to pressure induced deflection of a contact region of said membrane contacted by said sensing arm; and 
to be displaced in
a switch including a sensing arm engageable with a second side of { HEAD ~ said membrane } to be displaced in { TAIL ~ response } to pressure induced deflection of a contact region of said membrane contacted by said sensing arm ; and
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH