The electric interface enables data communication between the communications module and the electric device in {HEAD ~ either a serial mode} or {TAIL ~ parallel mode} 
The electric interface enables data communication between the communications module and the electric device in { HEAD ~ either a serial mode } or { TAIL ~ parallel mode }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL