... Geophone, movement alert 4.Over speed alert gps tracker / car gps tracker / gps tracker tk102 TK102 900/1800MHz GPS/GPRS/GSM Personal trackerUnit size: 64mm x ... if it enters into the blind area.3) Add or change Username and Password.4) Monitoring and SOS feature. ... 10) GPRS, UDP, TCP protocol.11) Google link report, tracking software provided TK102-2,Gps tracker,900/1800/1900Mhz,with Waterproof bag ...