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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 FA521A-R4 RS232 to DB25 Serial Adapter
Overview
The Black Box FA521A-R4 adapter facilitates the connection between devices utilizing an RS232 serial interface with a DB9 male connector and systems or peripherals featuring a DB25 female port. This is critical for integrating legacy serial equipment into modern infrastructure or for specific industrial automation and control systems where DB25 interfaces are still prevalent. Its passive design means no external power is required, simplifying deployment.
Compatibility
This adapter is designed for direct physical interface conversion. It is compatible with any RS232 serial device featuring a DB9 male output, such as older modems, terminals, or specific industrial controllers, and any system requiring a DB25 female serial input. Ensure your host system or peripheral device supports the RS232 communication protocol and baud rates required by your connected equipment.
Installation Notes
No special tools are required for installation. Simply connect the DB9 male end to your RS232 device and the DB25 female end to your system's port. Ensure a secure connection to prevent signal loss. The adapter is passive and does not require any drivers or software configuration.
What's in the Box
- 1x FA521A-R4 RS232 to DB25 Serial Adapter
Black Box RS232 Serial Adapter - DB9 Male TO DB25 - FA521A-R4
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.
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- Access fixed-scope support for rollout planning
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Guides, Tools & Calculators
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