TG451 Series Gateway is a type of industrial 802.11/b/g/n cellular gateway, which adopts high-powered industrial 32-bits CPU, with multi-layer software detection and hardware protection mechanism to ensure reliability and stability of the device. It supports worldwide carrier 4G/3G/2G cellular network FDD-LTE, TDD-LTE, and WCDMA, EVDO, TD-SCDMA, EDGE, CDMA 1X and GPRS. With rich VPN protocols (IPSEC, PPTP, L2TP, GRE and OpenVPN) to ensure the security of data transmission, and rich interfaces, such as 4x LAN ports, 1x WAN port, 1x USB port, 2x Relay(Option), 1x RS232, 1x RS485, 2x DI(Digital Input), 1x CAN(Option), Dual SIM(Single module and Dual module, option), GPS(Option) and WIFI.