ThermoPro
ThermoPro TP-65A CO2
$90
ThermoPro TP-65A CO2 Overview
The ThermoPro TP-65A CO2 is a mid-range 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 ±75 ppm across a 400-5000 ppm measurement range. At $90, it is aimed at home use and budget-conscious buyers.
In day-to-day use, the TP-65A CO2 offers an onboard display, so you can read levels at a glance without opening an app, plus Bluetooth connectivity for logging trends and setting alerts, plus a stationary design (USB powered + battery backup) best suited to continuous monitoring in a fixed location.
Best For
Full Specifications
| Price | $90 |
| Sensors | CO2, Temperature, Humidity |
| Sensor Type | NDIR |
| Connectivity | Bluetooth |
| Display | Yes |
| Portable | No |
| Battery Life | USB powered + battery backup |
| CO2 Accuracy | ±75 ppm |
| CO2 Range | 400-5000 ppm |
Pros & Cons
Pros
- ✓True NDIR CO2 sensor (not an eCO2 estimate)
- ✓Built-in display for at-a-glance readings
- ✓Accessible price point for a real CO2 sensor
Cons
- ✗Bluetooth only — no remote access when you are away from home
- ✗Not designed for portable use
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Frequently Asked Questions
Is the ThermoPro TP-65A CO2 accurate?+
The ThermoPro TP-65A CO2 uses a NDIR sensor with a stated accuracy of ±75 ppm over a range of 400-5000 ppm. NDIR is the proven reference technology for consumer CO2 monitoring.
What does the ThermoPro TP-65A CO2 measure?+
It measures CO2, Temperature, Humidity. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the ThermoPro TP-65A CO2 need WiFi?+
No. The ThermoPro TP-65A CO2 uses Bluetooth for syncing with the app and shows readings on its built-in display.
Is the ThermoPro TP-65A CO2 worth it in 2026?+
At $90, the ThermoPro TP-65A CO2 is a solid choice for home use and budget-conscious buyers. Its NDIR sensor puts it ahead of cheaper eCO2 estimators. Compare alternatives in our monitor comparison tool before buying.