Price History for Black Box Network Services IC821A RS-232 to RS-422 & RS-485 Interface Converter
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Black Box Network Services IC821A RS-232 to RS-422 & RS-485 Interface Converter
The BLACK BOX® Universal RS-232 to RS-422/485 Converter with Opto-Isolation isolates and converts RS-232 signals into RS-422/RS-485 signals and vice versa. Unlike other converters external software is not requ
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Jun 16, 2026 | $191.45 |
| Jun 13, 2026 | $209.00 |
| May 23, 2026 | $192.45 |
| May 22, 2026 | $191.45 |
| May 12, 2026 | $209.00 |
| May 8, 2026 | $191.45 |
| May 7, 2026 | $193.40 |
| May 6, 2026 | $198.99 |
| May 5, 2026 | $197.13 |
| May 2, 2026 | $192.27 |
| May 1, 2026 | $191.45 |
| Apr 28, 2026 | $1.13 |
| Apr 23, 2026 | $191.45 |
| Apr 19, 2026 | $192.83 |
| Jan 31, 2026 | $209.00 |
| Jan 24, 2026 | $204.91 |
| Jan 17, 2026 | $204.91 |
| Dec 23, 2025 | $204.91 |
| Dec 19, 2025 | $204.91 |
Analysis
Black Box Network Services IC821A RS-232 to RS-422 & RS-485 Interface Converter price analysis
Price analysis for Black Box Network Services IC821A RS-232 to RS-422 & RS-485 Interface Converter at Walmart: Today's price is $191.45. Current price is 4% below the 90-day average of $198.67 (a $7.22 below the running mean).
- Current price is 4% below the 90-day average of $198.67 (a $7.22 below the running mean).
- The lowest recorded price on PriceWatchPro was $1.13 on April 28, 2026. That's $190.32 below today's price.
- The highest recorded price on PriceWatchPro was $209.00 on January 31, 2026. Today's price is $17.55 below that peak.
- Across 18 tracked price changes, the listing has dropped 7 times with an average drop of $35.79.
- PriceWatchPro has been tracking this listing since December 19, 2025 (230 days of price history).
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