1,16 ports gsm modem 2,Cluster sending SMS 3,High speed sending 4,Saving time and ... of the sending and receiving SMS by using the relevant computer management softwarewe. Modulesmodule NO.FunctionSample PriceQ2303ASMS(600pcs/hour by one ... free to help you set up the gsm modem and cluster send SMS when you buy one gsm modem. Operation Pictures ...