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