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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 SP340A-R3 RS-232 Opto-Isolator
Overview
The Black Box SP340A-R3 is an opto-isolator designed to protect serial RS-232 communication interfaces. It physically separates connected devices, preventing ground loops and voltage transients from damaging sensitive equipment. This unit is essential when integrating devices with different ground potentials or in environments prone to electrical interference, ensuring stable and reliable data transfer for systems requiring RS-232 connectivity.
Compatibility
This opto-isolator is compatible with any system utilizing standard RS-232 serial communication via DB25 connectors. It functions as a passive interface, requiring no external power. It is suitable for use with a wide range of industrial control systems, legacy data acquisition hardware, and older network equipment that relies on DB25 serial ports for configuration or data logging.
Installation Notes
The SP340A-R3 features a male DB25 connector on one end and a female DB25 connector on the other, allowing for direct inline connection between two RS-232 devices. No drivers or software are required, as it operates at the physical layer. Ensure proper pinout alignment for standard RS-232 communication (Tx, Rx, GND). The unit is housed in a black, durable casing.
What's in the Box
- 1x Black Box SP340A-R3 Opto-Isolator
Black Box Opto Isolator - RS-232 DB25 Male TO DB25 - SP340A-R3
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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