Price History for Portable Indoor Air Quality CO2 Meter
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Portable Indoor Air Quality CO2 Meter
The Triplett Model GSM400 Indoor Air Quality CO2 Meter measures CO2, Temperature, Humidity, Wet Bulb and Dew Point and can be used to measure air quality in office buildings, schools, exhibition halls, shopping
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Price History Chart
Recorded price history
| Date | Price |
|---|---|
| Jun 20, 2026 | $277.87 |
| Jun 19, 2026 | $450.99 |
| Mar 1, 2026 | $277.87 |
| Feb 28, 2026 | $365.27 |
| Dec 14, 2025 | $277.87 |
| Dec 9, 2025 | $277.87 |
| Nov 28, 2025 | $277.87 |
| Nov 12, 2025 | $277.87 |
Analysis
Portable Indoor Air Quality CO2 Meter price analysis
Price analysis for Portable Indoor Air Quality CO2 Meter at Home Depot: Today's price is $277.87. Current price is 24% below the 90-day average of $364.43 (a $86.56 below the running mean).
- Currently listed at $277.87, which is $0.00 above the original MSRP of $277.87.
- Current price is 24% below the 90-day average of $364.43 (a $86.56 below the running mean).
- The lowest recorded price on PriceWatchPro was $277.87 on November 12, 2025. The current listing is at this all-time low.
- The highest recorded price on PriceWatchPro was $450.99 on June 19, 2026. Today's price is $173.12 below that peak.
- Across 7 tracked price changes, the listing has dropped 2 times with an average drop of $130.26.
- PriceWatchPro has been tracking this listing since November 12, 2025 (269 days of price history).
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