Price History for Digital Carbon Dioxide Monitor/Controller
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Digital Carbon Dioxide Monitor/Controller
Manage your indoor CO2 levels with the TRIPLETT Model GSM500 Carbon Dioxide Monitor/Controller. This versatile device helps to monitor and regulate CO2 values in enclosed spaces, providing different modes for p
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Aug 15, 2026 | $340.99 |
| Aug 14, 2026 | $166.92 |
| Aug 12, 2026 | $340.99 |
| Aug 9, 2026 | $166.92 |
| Jul 29, 2026 | $340.99 |
| Jul 27, 2026 | $166.92 |
| Jul 26, 2026 | $340.99 |
| Jun 20, 2026 | $166.92 |
| Jun 19, 2026 | $340.99 |
| May 26, 2026 | $166.92 |
| May 14, 2026 | $171.70 |
| May 13, 2026 | $173.50 |
| Mar 30, 2026 | $171.70 |
| Feb 25, 2026 | $173.85 |
| Feb 10, 2026 | $179.45 |
| Feb 7, 2026 | $194.70 |
| Feb 5, 2026 | $216.33 |
| Feb 3, 2026 | $240.37 |
| Jan 1, 2026 | $253.02 |
| Dec 14, 2025 | $329.31 |
| Nov 22, 2025 | $329.31 |
| Nov 20, 2025 | $329.31 |
| Nov 10, 2025 | $329.31 |
Analysis
Digital Carbon Dioxide Monitor/Controller price analysis
Price analysis for Digital Carbon Dioxide Monitor/Controller at Home Depot: Today's price is $340.99. Current price is 34% above the 90-day average of $253.96 (a $87.03 above the running mean).
- Currently listed at $340.99, which is $11.68 above the original MSRP of $329.31.
- Current price is 34% above the 90-day average of $253.96 (a $87.03 above the running mean).
- The lowest recorded price on PriceWatchPro was $166.92 on May 26, 2026. That's $174.07 below today's price.
- The highest recorded price on PriceWatchPro was $340.99 on June 19, 2026.
- 30-day trend: essentially flat (less than 1% movement).
- Across 22 tracked price changes, the listing has dropped 13 times with an average drop of $66.19.
- PriceWatchPro has been tracking this listing since November 10, 2025 (278 days of price history).
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