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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.
The Black Box SP385A-R3 provides a robust, opto-isolated interface for connecting legacy RS232 serial devices to modern USB ports. This converter is essential for integrating industrial equipment, point-of-sale systems, or older surveillance components that rely on serial communication into a USB-centric network. Its opto-isolation protects sensitive equipment from ground loops and voltage spikes, ensuring reliable data transfer in electrically noisy environments. Designed to meet Trade Agreements Act (TAA) requirements, it's suitable for government and enterprise deployments.
This converter is designed for broad compatibility with any device featuring an RS232 serial port and requiring a USB connection. It functions as a virtual COM port on Windows, Linux, and macOS systems, allowing seamless integration with most VMS platforms, industrial control software, and custom applications that support serial device communication. Specific compatibility is dependent on the host operating system and the serial device's communication protocol.
Connect the USB Type-A end to the host computer and the DB9 male connector to the RS232 device. Install the necessary drivers (typically found on the manufacturer's support site or included with the device) to create a virtual COM port. Ensure the RS232 device is powered and configured correctly before establishing the USB connection. The opto-isolation provides protection against voltage differentials up to 2500Vrms, but direct physical damage from improper wiring or extreme voltage surges beyond this rating should still be avoided.
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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Support services and planning resources for commercial surveillance, access control, and infrastructure deployments.
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