77532 AZ
Essential CO₂ checks
- CO₂ (0–9,999 ppm), NDIR
- USB PC connection (live data)
- Large backlit display
Air Quality Meters
PRODUCTS
AZ 775x Series – Monitor Every Breath with Confidence
From essential CO₂ spot‑checks to full‑spectrum IAQ analysis, the AZ 775x range helps you keep classrooms, offices, hospitals and industrial spaces healthy and compliant.
USB data outputCO₂ (NDIR)Temperature*Humidity*Dew point / Wet bulb*
*Available on selected models.
7752 AZ
CO₂ + Temperature
- CO₂ (0–9,999 ppm) + Temperature
- USB PC connection (live data)
- Fresh‑air CO₂ calibration
77535 AZ
CO₂ + Temp + RH
- CO₂, Temperature, Humidity
- USB PC connection (supports logging via software)
- RH calibration with 33%/75% salt bottles
7755 AZ
Full‑spectrum IAQ
- CO₂, Temperature, Humidity, Dew point & Wet bulb
- USB PC connection (continuous real‑time logging with software)
- Fresh‑air CO₂ + RH salt calibration
Description
Take charge of your indoor environment with the 7755 AZ Portable CO2 Detector — a powerful, all-in-one tool for monitoring indoor air quality with precision. Designed for professionals and everyday users alike, this device measures key environmental factors including CO2 concentration, temperature, humidity, dew point, and wet bulb temperature, giving you a complete picture of your air quality in real time.
Easily connect the device to your PC for live data output and in-depth analysis, making it ideal for continuous monitoring in offices, schools, hospitals, factories, and homes.
The CO2 sensor can be quickly calibrated in fresh air, while the humidity sensor is easily adjusted using the AZ 33%/75% salt calibration bottles, ensuring consistent accuracy.
Its bright backlight display allows effortless operation in low-light conditions, making it reliable for every workspace. Compact, portable, and built for long-term performance, the 7755 AZ CO2 Detector is your trusted partner for maintaining healthy, compliant, and comfortable indoor environments.
Compare the AZ 775x Range
All models feature an NDIR CO₂ sensor, a backlit display and USB interface to PC. Logging is available via companion software where supported.
| Feature | 77532 AZ | 7752 AZ | 77535 AZ | 7755 AZ |
|---|---|---|---|---|
| CO₂ Measurement Range | 0–9,999 ppm | 0–9,999 ppm | 0–9,999 ppm | 0–9,999 ppm |
| CO₂ Accuracy | ±50 ppm ±5% of reading | ±50 ppm ±5% of reading | ±50 ppm ±5% of reading | ±50 ppm ±5% of reading |
| Temperature | — | Yes (0–50 °C) | Yes (0–50 °C) | Yes (0–50 °C) |
| Humidity (RH) | — | — | Yes (0–99.9% RH) | Yes (0–99.9% RH) |
| Dew Point / Wet Bulb | — | — | — | Yes |
| Calibration | CO₂: Fresh‑air | CO₂: Fresh‑air | CO₂: Fresh‑air; RH: 33%/75% salts | CO₂: Fresh‑air; RH: 33%/75% salts |
| Data Output (to PC) | USB interface (live data) | USB interface (live data) | USB interface | USB interface |
| Data Logging (via PC software) | Supported when connected* | Supported when connected* | Supported (incl. sessions) | Supported (continuous real‑time) |
| Power | 4 × AA / 9 V DC | 4 × AA / 9 V DC | 4 × AA / 9 V DC | 4 × AA / 9 V DC |
| Typical Use | Spot CO₂ checks in classrooms & offices | CO₂ + comfort checks (HVAC, classrooms) | Routine IAQ in workspaces & clinics | Audits, compliance, continuous monitoring |
* Live data can be recorded by companion software while connected via USB. Internal memory is not specified on all models.
Ready to improve your indoor air quality?
Tell us about your site, occupancy and ventilation setup. We’ll recommend the right 775x model and bundle.