4G LTE Cat4 IIoT Gateway, Ethernet port, 1x RS232/485, 3x DI, 2xDO, 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 OpenVPN Client mode, Modbus TCP/RTU/ASCII Master/Slave, operating temperature: -30 to 70 ˚C