MLB is a Class A LoRaWAN device that can operate on a public or private network. MLB is designed to convert Modbus RTU messages into LoRaWAN wireless messages and vice versa. The device functions as a Modbus master and can read and write up to 32 registers via the Modbus RTU bus. The registers of the slave device can be freely configured. Up to 16 Modbus slave devices can be connected to MLB, and a total of up to 32 registers can be read and written. MLB can connect to any Modbus RTU slave device and supports bidirectional communication.