E+E Elektronik
E+E Elektronik EE850
$450
E+E Elektronik EE850 Overview
The E+E Elektronik EE850 is a professional-grade CO2 monitor that tracks CO2 and Temperature. It uses a NDIR sensor — the technology we recommend for reliable CO2 readings — with a stated accuracy of ±50 ppm across a 0-10000 ppm measurement range. At $450, it is aimed at commercial buildings, HVAC integration and professional applications.
In day-to-day use, the EE850 offers no built-in display — readings are accessed through a connected app or dashboard, plus Modbus and RS-485 connectivity for logging trends and setting alerts, plus a stationary design (24V DC powered) best suited to continuous monitoring in a fixed location.
Best For
Full Specifications
| Price | $450 |
| Sensors | CO2, Temperature |
| Sensor Type | NDIR |
| Connectivity | Modbus, RS-485 |
| Display | No |
| Portable | No |
| Battery Life | 24V DC powered |
| CO2 Accuracy | ±50 ppm |
| CO2 Range | 0-10000 ppm |
Pros & Cons
Pros
- ✓True NDIR CO2 sensor (not an eCO2 estimate)
Cons
- ✗No onboard display — requires the app to check readings
- ✗No wireless connectivity for logging or alerts
- ✗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 E+E Elektronik EE850 accurate?+
The E+E Elektronik EE850 uses a NDIR sensor with a stated accuracy of ±50 ppm over a range of 0-10000 ppm. NDIR is the proven reference technology for consumer CO2 monitoring.
What does the E+E Elektronik EE850 measure?+
It measures CO2, Temperature. CO2 is the key metric for judging ventilation — levels below 800 ppm indicate well-ventilated air.
Does the E+E Elektronik EE850 need WiFi?+
No. The E+E Elektronik EE850 works standalone.
Is the E+E Elektronik EE850 worth it in 2026?+
At $450, the E+E Elektronik EE850 is a solid choice for commercial buildings, HVAC integration and professional applications. Its NDIR sensor puts it ahead of cheaper eCO2 estimators. Compare alternatives in our monitor comparison tool before buying.