Professional IoT Solutions 02. 43 With the most popular Industrial Protocols integrated in a single device (Modbus, RS-485, RS-232, 4-20 mA, SDI-12), this model allows the connection of any sensor or actuator among 1,000s on the market. Besides, Libelium offers extreme flexibility (open source API and IDE) and top inter-operability, so factories can enter the Industry 4.0 era. Industry 4.0 Communication options Communication options Accessories Accessories A IoT Solutions based on Plug & Sense! Platform 2.4 Industry