4G LTE Cat4 IIoT Gateway, Dual SIM slots, GNSS receiver, 2 Gigabit ports with 1 WAN/LAN, 1x micro-SD Slot, 1x DI, 1x DO, GPS connector, Dual external 4G antennas, LTE Band support 1/3/7/8/20/28A/38/40/41 (150Mbps DL, 50Mbps UL), web-based UI/SNMP management/D-ECS Cloud Management, FOTA, supports IPSec, PPTP, L2TP, OpenVPN, GRE tunnels, Modbus TCP/RTU/ASCII Master/Slave, operating temperature: -30 to 70 ˚C