... side communication of up to 200m. Multiple Memory OptionsSET X has 1MB of internal memory, CF card slot and USB ports ... . A 1GB SD card can also be used ... 1.3 to 500m (4.3 to 1,640ft.)With 1 AP prism1.3 to 5,000m (4.3 to 16,400ft.), to 6,000m ... SD card (with CF adapter, max. 1GB)InterfaceSerial RS-232C (baud rate: 1,200 to 38,400bps), USB1.1 Host ( ...