Inline - Bus coupler - Modbus/RTU - D-SUB-9 female connector - Digital inputs: 8 - 24 V DC - connection method: 3-wire - Digital outputs: 4 - 24 V DC - 500 mA - connection method: 3-wire - transmission speed in the local bus: 500 kbps / 2 Mbps - degree of protection: IP20 - including Inline connectors and marking fields