The TRB256 is an industrial 4G LTE NB-IoT gateway designed for use in a wide range of IoT solutions. The device is equipped with multiple WAN interfaces such as I/Os, RS232, RS485 and an Ethernet port and also features dual SIM functionality for continuous connectivity. This industrial-grade gateway also supports the 450 MHz frequency band and offers better LTE signal penetration compared to standard frequencies, making it an optimal choice for a wide range of M2M applications.