SenseAir
SenseAir S8 Module
$40
SenseAir S8 Module Overview
The SenseAir S8 Module is a budget CO2 monitor that tracks CO2. It uses a NDIR sensor — the technology we recommend for reliable CO2 readings — with a stated accuracy of ±40 ppm across a 400-10000 ppm measurement range. At $40, it is aimed at DIY projects and professional applications.
In day-to-day use, the S8 Module offers no built-in display — readings are accessed through a connected app or dashboard, plus UART connectivity for logging trends and setting alerts, plus a stationary design (N/A (module)) best suited to continuous monitoring in a fixed location.
Best For
Full Specifications
| Price | $40 |
| Sensors | CO2 |
| Sensor Type | NDIR |
| Connectivity | UART |
| Display | No |
| Portable | No |
| Battery Life | N/A (module) |
| CO2 Accuracy | ±40 ppm |
| CO2 Range | 400-10000 ppm |
Pros & Cons
Pros
- ✓True NDIR CO2 sensor (not an eCO2 estimate)
- ✓Accessible price point for a real CO2 sensor
Cons
- ✗No onboard display — requires the app to check readings
- ✗No wireless connectivity for logging or alerts
- ✗Not designed for portable use
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Frequently Asked Questions
Is the SenseAir S8 Module accurate?+
The SenseAir S8 Module uses a NDIR sensor with a stated accuracy of ±40 ppm over a range of 400-10000 ppm. NDIR is the proven reference technology for consumer CO2 monitoring.
What does the SenseAir S8 Module measure?+
It measures CO2. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the SenseAir S8 Module need WiFi?+
No. The SenseAir S8 Module works standalone.
Is the SenseAir S8 Module worth it in 2026?+
At $40, the SenseAir S8 Module is a solid choice for DIY projects and professional applications. Its NDIR sensor puts it ahead of cheaper eCO2 estimators. Compare alternatives in our monitor comparison tool before buying.