Signshine S3924 industrial 4x Lan 3G WIFI Router is a wireless cellular router by using 3G network with industrial grade design and Four Ethernet port and RS232. Industrial 3G router adopts high-powered ARM9 processor and embedded with real time operating system as software support platform, conveniently and transparently connects one device to a cellular network, allowing you to connect to your existing serial and Ethernet devices with only basic configuration. M2M 3G router has been widely used in M2M/SCADA field, such as power automation, transportation, financial service terminal, factory automation, water, oil&gas, large machine maintenance, environment, building automation, outdoor digital signage ect.