1,8 ports gsm modem 2,Cluster sending SMS 3,High speed sending 4,Saving time and money Modulesmodule ... by one port),MMS,TCP Protocol 900/1800$330 Q24plus SMS,MMS,TCP Protocol, remote control 850/900/1800/1900$ ... Size: 32 x 18 x 22cmSend 600/800/1000/1200 SMS per hour by one portWeight: 3.5kg Application· Large shopping ... free to contact me. 8 Port GSM Modem, GSM/CDMA Wireless Terminals,Bulk SMS platform