GPS GSM tracker module of high Performance, Low Price 1.Chipset:SiRF star III 2.Cold start time<48 ... .Size: 25.4*25.4*3. GPS GSM tracker module with Low Price, High Performance, International Approvals, Prompt Delivery, Small Orders Accepted.1. Physical ... .Serial Port: 1).Two full duplex serial communication, TTL interface, with user selectable baud rate (4800,9600,19200,38400,57600)-User ...