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Questions about this product? Free pre-sales support from a senior specialist — product questions, compatibility checks, BOM quotes, price confirmation — typically answered within one business day. Need camera placement or system design work? Engineering time is $175 per hour (qty 1 = 1 hour). Hardware buyers get up to one hour ($175) credited back on their order.
Black Box MED100A Serial to Fiber Converter
Overview
The Black Box MED100A is a compact serial-to-fiber converter designed to extend RS-232, RS-422, or RS-485 communication signals over multimode fiber optic cable. This device is essential for environments where standard serial connections are too short or susceptible to electromagnetic interference. It enables reliable data transmission up to 2 kilometers, making it suitable for industrial automation, building management systems, and point-of-sale networks where serial devices need to be located at a distance from the host controller.
Compatibility
This converter supports RS-232, RS-422, and RS-485 serial interfaces, offering broad compatibility with a wide range of industrial equipment, legacy devices, and control systems. It is designed for use with multimode fiber optic transceivers, typically SC connectors, allowing integration into existing fiber networks. Specific compatibility extends to any host system or serial device that utilizes these standard serial protocols and requires extended range or electrical isolation.
Installation Notes
The MED100A requires a separate power supply (not included) to operate. It connects to the serial device via a standard DB9 connector and to the fiber network via SC connectors. Ensure proper polarity is maintained for RS-485 configurations. The unit is designed for non-harsh environments and should be installed in a protected location, such as an enclosure or control panel, to prevent dust and moisture ingress.
What's in the Box
- 1x MED100A Converter
- 1x User Manual
Black Box Extend RS232 RS422 OR RS485 Over Multimode - MED100A
Build Your Complete System
Manufacturer-verified compatible cameras, recorders, mounts, accessories, and licenses for this product. Adjust quantities and add the entire bundle to your cart in one click.
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System Design, Deployment & Technical Support
Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
Fixed scope • Fixed price
System Design Assistance
- Get help validating product compatibility
- Coverage requirements
- Storage planning and deployment architecture before you buy.
Deployment & Configuration Support
- Access fixed-scope support for rollout planning
- User setup guidance
- Migration and system standardization across single-site or multi-site deployments
Guides, Tools & Calculators
- PoE requirements
- Storage retention
- Camera selection and deployment methodology