The apparatus 4, wherein {HEAD ~ a coded information item} is transmitted from {TAIL ~ the portable transmitter unit} to the receiver apparatus directly after the security device has been mechanically deactivated 
is transmitted from
The apparatus 4 , wherein { HEAD ~ a coded information item } is transmitted from { TAIL ~ the portable transmitter unit } to the receiver apparatus directly after the security device has been mechanically deactivated
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH