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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 SW1047A DB9 A/B Switch
Overview
The Black Box SW1047A is a passive DB9 A/B switch designed for manual or remote control switching of serial data paths. This unit is essential in environments where you need to isolate or switch between two different serial devices or configurations without physically disconnecting cables. Its latching remote control feature allows for stateful switching, meaning the selected path remains active until a new selection is made, ideal for critical infrastructure or test bench setups where accidental state changes must be prevented. The black, compact form factor ensures it can be integrated into existing rack or desktop configurations without occupying significant space.
Compatibility
This switch is compatible with any standard DB9 serial interface. It functions as a passive switch, meaning it does not require external power for basic A/B switching. The latching remote control functionality requires a simple dry contact closure, making it compatible with a wide range of control systems, PLCs, or custom automation setups. It is suitable for use with any serial device, including modems, printers, terminals, and industrial control equipment that utilizes a DB9 connector.
Installation Notes
Installation involves connecting the common serial device to the 'COM' port and the two selectable serial devices or configurations to ports 'A' and 'B'. The remote control port utilizes dry contact closure for switching. Ensure proper cable termination and strain relief to maintain signal integrity. No external power is required for the core switching function.
What's in the Box
- 1x Black Box SW1047A DB9 A/B Switch
Black Box DB9 A/b Switch - Latching Remote Control DRY - SW1047A
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
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Deployment & Configuration Support
- Access fixed-scope support for rollout planning
- User setup guidance
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Guides, Tools & Calculators
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