... sec. 3.Size: 20.0*24.3*3.0mm GPS receiver module with Low Price, High Performance, International Approvals, Prompt Delivery, Small ... .Serial Port: 1).Two full duplex serial communication, TTL interface, with user selectable baud rate (4800,9600,19200,38400,57600)-User ... .glead.com.cn We specialized in R&D and Production ofthe GPS Antennas , GPS Modules and GPS Receivers for ten years. We have strong R ...