{HEAD ~ The field} relates generally to the field of controls and, more particularly, to method and apparatus for controlling {TAIL ~ dispensers} and for detecting users 
{ HEAD ~ The field } relates generally to the field of controls and , more particularly , to method and apparatus for controlling { TAIL ~ dispensers } and for detecting users
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH