CO2Meter
CO2Meter RAD-0501
$300
CO2Meter RAD-0501 Overview
The CO2Meter RAD-0501 is a professional-grade CO2 monitor that tracks CO2, Temperature and Humidity. 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 $300, it is aimed at professional applications and commercial buildings.
In day-to-day use, the RAD-0501 offers an onboard display, so you can read levels at a glance without opening an app, plus USB and WiFi connectivity for logging trends and setting alerts, plus a stationary design (USB powered) best suited to continuous monitoring in a fixed location.
Best For
Full Specifications
| Price | $300 |
| Sensors | CO2, Temperature, Humidity |
| Sensor Type | NDIR |
| Connectivity | USB, WiFi |
| Display | Yes |
| Portable | No |
| Battery Life | USB powered |
| 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
- ✓Built-in display for at-a-glance readings
- ✓WiFi connectivity for remote monitoring and history
Cons
- ✗Not designed for portable use
- ✗Premium price compared with entry-level alternatives
Compare this monitor with others using our Monitor Comparison Tool
Frequently Asked Questions
Is the CO2Meter RAD-0501 accurate?+
The CO2Meter RAD-0501 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 CO2Meter RAD-0501 measure?+
It measures CO2, Temperature, Humidity. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the CO2Meter RAD-0501 need WiFi?+
The CO2Meter RAD-0501 supports WiFi (plus USB) for remote monitoring, but the onboard display works without any connection.
Is the CO2Meter RAD-0501 worth it in 2026?+
At $300, the CO2Meter RAD-0501 is a solid choice for professional applications and commercial buildings. Its NDIR sensor puts it ahead of cheaper eCO2 estimators. Compare alternatives in our monitor comparison tool before buying.