... time<48 sec. 3.Size: 25.4*25.4*3. GPS GSM tracker module with Low Price, High Performance, International Approvals, Prompt Delivery ... ASCII output (GGA, GSA, GSV, RMC (VTG ,GLL and ZDA for optional)) 3).SiRF binary:position, velocity, altitude, status output 11 ... Pulse duration 1us 3).Time reference At the pulse positive edge 4).Measurements Aligned to GPS second, ±1 microsecond 12. Environmental ...