... sms 2,RS232 & USB & RJ45 3,800/850/900/1800Mhz 4,software support 5,serial port gsm modem The device ... , simultaneously to send text messages. Key Features♦USB/RS232 GSM modem pool♦Based on Wavecom industrial modules Q24plus,Q2406,Q2303, ... can be demolished5, industrial chassis, elegant shell serial port gsm modem Applications ♦ Large shopping malls, supermarkets♦ Professional market, large wholesalers ...