TENSTAR SCD40 SCD41 Gas Sensor Module 2.4-5.5V Detects CO2 Carbon Dioxide Temperature and Humidity Sensor I2C Communication
Quick answer
Is $17.75 a good price for TENSTAR SCD40 SCD41 Gas Sensor Module 2.4-5.5V Detects CO2 Carbon…?
It is the usual price, not a deal: $17.75 is in line with the typical price of $17.69 that DipScout measured over the last 6 days. Tracked since Oct 21, 2026, it ranged from $16.82 to $17.75.
$17.75
Today it costs $17.75 on AliExpress. Since Oct 21, 2026, when we started tracking it, it ranged from $16.82 to $17.75. By our price history, it is not on sale right now.
No drop compared with what we observed over the last 6 days. The store advertises "was $41.19", but that is the store's own claim; we only state discounts our price history proves.
View on AliExpressThe price above is the last recorded reading, not a live checkout lookup.
Price history
Today$17.75highest ever seen
Lowest$16.82Oct 25 to Oct 26
Highest$17.75since Oct 27
Tracked since Oct 21 · 3 changesHover over the chart to see each price.Tap the chart to see each price.
See every price change
| When | Price | Change |
|---|---|---|
| Oct 27, 00:46 UTC | $17.75 | +4% |
| Oct 26, 00:45 UTC | $17.05 | +1% |
| Oct 25, 18:52 UTC | $16.82 | −5% |
| Oct 21, 02:50 UTC | $17.69 | start |
| Store | TENSTAR 02 Store |
|---|---|
| Product rating | — |
| Store rating | — |
| AliExpress category | Electronic Components & Supplies › Active Components |
| Recorded readings | 4 |
| First seen | 10/21/2026 |
| Last reading | 10/27/2026, 6:49:12 AM UTC |