Moxa NM-GPRS Cellular network modem

4-port cellular NM-GPRS/GSM module (for the NPort 6400/6600 series) Most countries in the world use the GSM-900 and GSM-1800 cellular frequencies. However, in the United States, Canada, and other parts of the Americas, GSM-850 and GSM-1900 are used. With the NM-GPRS/GSM quad-band cellular module, you don’t need to worry about selecting different products for different parts of the world. The NM-GPRS/GSM module’s GSM/GPRS band is configured at 900/1800 MHz by default, but can be easily reconfigured to 850/1900 MHz.