ABUS TV8469 RS232 to RS485 Interface Converter, DB9, Bus-Powered, 115.2 kbps, 1200 m, Black

Legacy serial devices often struggle to communicate over long distances or in noisy industrial environments. The ABUS TV8469 interface converter bridges this gap by converting RS232 signals to RS485, enabling reliable data transmission up to 1200 metres. With automatic data direction control and bus-powered operation, it eliminates the need for external power supplies or software configuration, making it a plug-and-play solution for extending serial communication in security, automation, and industrial control systems.

Who is it for

This converter is ideal for system integrators, security installers, and industrial technicians who need to connect RS232-based equipment—such as CCTV matrices, access control panels, or PLCs—to RS485 networks. It is especially useful in applications requiring long cable runs, multi-drop configurations, or operation in harsh temperature conditions.

Main features

• Converts RS232 to RS485 with automatic data direction control, eliminating the need for handshaking signals or manual switching.
• Bus-powered from RS232 handshake lines (DTR/RTS/TxD), so no external power supply is required.
• Supports baud rates up to 115.2 kbps and distances up to 1200 m on RS485.
• ESD protection up to 15 kV safeguards the converter and connected equipment from electrostatic discharge.
• Compact ABS housing with DB9 female (RS232) and DB9 male (RS485) connectors for easy inline installation.
• Operating temperature range from -25°C to 70°C for reliable performance in extreme environments.
• Driverless operation—works with any operating system without additional software.

Specifications

• Conversion type: RS232 to RS485
• RS232 connector: DB9 female
• RS485 connector: DB9 male
• RS485 mode: 2-wire half-duplex
• Data direction control: Automatic
• Maximum baud rate: 115.2 kbps
• Maximum RS485 distance: 1200 m
• Power supply: Bus-powered from RS232 DTR/RTS/TxD lines
• External power required: No
• Galvanic isolation: No
• ESD protection: 15 kV
• Operating temperature: -25°C to 70°C
• Housing material: ABS plastic
• LED indicators: None
• Compatibility: OS independent (driverless)
• Standards: EIA/TIA RS232, EIA/TIA RS485

Tips

For best results, use twisted-pair cable for the RS485 connection and ensure proper termination at both ends of the bus. Since the converter is bus-powered, verify that your RS232 port provides sufficient voltage on the handshake lines; if not, a short adapter cable with external power may be needed. Mount the converter away from sources of electromagnetic interference to maintain signal integrity.