ELA-MG is an industrial-grade LoRa gateway integrated with LoRa wireless communication, serial interface (RS232/485) and DI/DO interfaces. Versatile interfaces make it flexible communication with most popular sensor / field devices for big data collection. In NBIoT model, MQTT protocol is equipped for cloud connection feature. This effectively reduces the development effort for connecting to cloud service in project design. In addition, NBIoT enables distributed architecture in wide area deployment. ELA-MG can achieve very good wireless performance in 2 Km distance with 90% successful transmission rate with ELA-MA. ELA-MG is designed for easy setup and maintenance. Multi-end points can form a broadcast network, with the same frequency and encryption the end points can communicate without pairing in advance. Thus, effectively reduce the effort in deployment and maintenance.