... TK668Functions & Features of gps tracker for motorbike TK668 1. Track on command or by time interval or ... the Alarm-received Mobile SMS command: W******,003,F,P,Mobile No. ****** is the user password, default ... function; F=1, to send alert SMS) (P=1, the first phone; P=2, the second phone; P=3, the ... preset mobile no. automatically. Example: W000000,003,1,1,13922713571 to the tracker’s SIM card number, ...