{HEAD ~ The electronic device} has {TAIL ~ a speaker, alarm lamps} and a level meter and can transfer data wirelessly 
{ HEAD ~ The electronic device } has { TAIL ~ a speaker , alarm lamps } and a level meter and can transfer data wirelessly
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH