SenseAir
SenseAir K-30
$85
SenseAir K-30 Overview
The SenseAir K-30 is a mid-range CO2 monitor that tracks CO2. It uses a NDIR sensor — the technology we recommend for reliable CO2 readings — with a stated accuracy of ±30 ppm across a 0-10000 ppm measurement range. At $85, it is aimed at DIY projects and professional applications.
In day-to-day use, the K-30 offers no built-in display — readings are accessed through a connected app or dashboard, plus UART and I2C 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 | $85 |
| Sensors | CO2 |
| Sensor Type | NDIR |
| Connectivity | UART, I2C |
| Display | No |
| Portable | No |
| Battery Life | N/A (module) |
| CO2 Accuracy | ±30 ppm |
| CO2 Range | 0-10000 ppm |
Pros & Cons
Pros
- ✓True NDIR CO2 sensor (not an eCO2 estimate)
- ✓Strong stated accuracy of ±30 ppm
- ✓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
Compare this monitor with others using our Monitor Comparison Tool
Frequently Asked Questions
Is the SenseAir K-30 accurate?+
The SenseAir K-30 uses a NDIR sensor with a stated accuracy of ±30 ppm over a range of 0-10000 ppm. NDIR is the proven reference technology for consumer CO2 monitoring.
What does the SenseAir K-30 measure?+
It measures CO2. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the SenseAir K-30 need WiFi?+
No. The SenseAir K-30 works standalone.
Is the SenseAir K-30 worth it in 2026?+
At $85, the SenseAir K-30 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.