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