The TRB256 is an industrial 4G LTE gateway with I/Os, RS232, RS485 and Ethernet interfaces for IoT solutions that require versatility and reliable M2M communication support. Dual SIM functionality Robust aluminium housing, supports various protocols such as DNP3, DLMS, MQTT and Modbus. Includes: - TRB256 Gateway - 16-pin terminal block - 1 x Hex wrench - Quick start guide - Packaging box