Black Box Industrial RS232/422/485 Fiber Extender

The Black Box MED101A is an industrial fiber extender designed to connect RS232, RS422, and RS485 equipment over multimode fiber. It enables reliable data communication in challenging environments where electrical noise and interference are common, such as near heavy machinery or in industrial plants. By converting serial signals to fiber optic transmission, it protects your data from electromagnetic interference and transient surges, ensuring stable and secure communication.

This extender supports RS-232 signals at speeds up to 115.2 kbps and RS-422/RS-485 signals up to 460.8 kbps, making it suitable for a wide range of industrial devices and protocols. It is compatible with Modbus ASCII and RTU, which are widely used in industrial automation, and includes Automatic Send Data Control to simplify setup by removing the need for additional driver software.

Installation is straightforward thanks to removable terminal blocks and the option to mount the unit on a DIN rail, allowing it to fit neatly into existing control cabinets or equipment racks. The MED101A is built to withstand harsh conditions, operating reliably in temperatures from -40°F to 185°F. Its three-way isolation with 2000-V input/output protection adds an extra layer of durability and safety, making it a dependable choice for extending serial communications over distances up to 2.5 miles (4 km).

This product is ideal for engineers and technicians working in industrial automation, manufacturing, or any setting where long-distance, interference-free serial communication is critical.

Highlights:

• Extends RS232, RS422, and RS485 protocols over multimode fiber
• Supports RS-232 speeds up to 115.2 kbps and RS-422/RS-485 up to 460.8 kbps
• Resistant to electromagnetic interference and transient surges
• Compatible with Modbus ASCII and RTU protocols
• Includes Automatic Send Data Control for easy setup without driver software
• Features removable terminal blocks for flexible wiring
• Operates reliably in temperatures ranging from -40°F to 185°F
• Provides 2000-V input/output isolation for enhanced protection
• Supports communication distances up to 2.5 miles (4 km)