... Size: 20.0*24.3*3.0mm GPS receiver module with Low Price, High Performance, International Approvals, ... Two full duplex serial communication, TTL interface, with user selectable baud rate (4800,9600,19200 ... the pulse positive edge 4).Measurements Aligned to GPS second, ±1 microsecond 12. Environmental Characteristics: ... R&D and Production ofthe GPS Antennas , GPS Modules and GPS Receivers for ten years. We ...