second announcing means connected to {HEAD ~ said switch} for carrying out said announcement in a second announcement mode only during a predetermined time duration after {TAIL ~ operation} of said switch 
second announcing means connected to { HEAD ~ said switch } for carrying out said announcement in a second announcement mode only during a predetermined time duration after { TAIL ~ operation } of said switch
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD 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