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AZ Indoor Air Quality Datalogger (CO2, Humidity, Temp)
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Specifications:
| Application | Air Quality Monitoring |
| Storage Temperature | Ambient |
| Product Type | Portable Meters |
| Product Brand | AZ Instruments |
| Product Grade | Laboratory grade |
CO₂, Humidity, and Temperature Monitoring with Visual Hazard Alerts and Data Logging
The Indoor Air Quality Datalogger is a smart, multi-parameter monitoring device designed to accurately measure and log carbon dioxide (CO₂) concentration, relative humidity, and ambient temperature in real time. Featuring a large LED display, color-coded CO₂ hazard level indicator, and touch panel controls, the Datalogger is ideal for continuous monitoring in public and commercial spaces.
Using advanced NDIR (non-dispersive infrared) CO₂ sensing technology and automatic background calibration (ABC), it provides reliable, long-term air quality monitoring. With a USB plug-and-play interface, this device can record up to 12,000 data points without requiring proprietary software, making it easy to retrieve and analyze indoor air quality data.
Key Features & Benefits
- ✅ Triple Sensor Display – Monitors and displays CO₂ (ppm), humidity (%RH), and temperature (°C/°F)
- ✅ NDIR CO₂ Sensor – Accurate, stable, and long-life non-dispersive infrared technology
- ✅ 3-Color LED Light Bar – Intuitive green/yellow/red display shows CO₂ concentration level at a glance
- ✅ Touch Panel Programming – Easily configure settings directly on the device
- ✅ 12000 Auto-Logged Records – Internal memory with USB Type-C data transfer (no software required)
- ✅ Wall-Mount Ready – Easy installation in classrooms, offices, restaurants, fitness centers, and more
- ✅ Audible Buzzer Alarm – Alerts users when air quality drops below acceptable thresholds
- ✅ Visual Comfort & Hazard Indicator – Supports ventilation planning and energy efficiency
Technical Specifications
| Specification | Value |
|---|---|
| Model | 77294 |
| CO₂ Measurement Range | 0–9999 ppm |
| CO₂ Resolution | 1 ppm |
| CO₂ Accuracy | ±50 ppm ±5% (0–2000 ppm), ±10% (above 2000 ppm) |
| CO₂ Response Time | <30 seconds (63% of step change) |
| Temperature Range | –10.0 to 60.0 °C (14.0 to 140.0 °F) |
| Temperature Accuracy | ±0.6 °C / ±0.9 °F |
| Temperature Resolution | 0.1 °C / °F |
| Humidity Range | 0.1% to 99.9% RH |
| Humidity Accuracy | ±5% RH (10–90%), ±7% RH (other ranges @25 °C) |
| Humidity Resolution | 0.1% RH |
| Response Time (Humidity) | <20 min (90% step change) |
| Data Logging Capacity | 12,000 records |
| Display | LED screen with CO₂/Humidity/Temp and color light bar |
| Alarm | Visual + audible buzzer |
| CO₂ Technology | NDIR with ABC (Auto Background Calibration) |
| Power Supply | USB Type-C (5VDC, <500mA) |
| IP Rating | IP20 (indoor use only) |
| Operating Conditions | 0–50 °C, 0–95% RH (non-condensing) |
| Storage Conditions | –20 to 50 °C, 0–95% RH (non-condensing) |
| Product Dimensions | 226 × 152 × 45 mm |
| Weight | 450 g |
| Standard Package | Meter, Manual, USB-C Cable, Wall Mount Accessories |
Applications
The 77294 AZ CO₂ RH% Temp. Datalogger is ideal for use in:
- Office Buildings – Maintain healthy, productive air quality for staff
- Schools & Classrooms – Monitor ventilation and CO₂ buildup for student wellbeing
- Exhibition Halls – Ensure crowd comfort and safety with clear air indicators
- Shopping Malls & Retail Spaces – Optimize HVAC systems based on occupancy trends
- Meeting Rooms – Guarantee fresh air during high-occupancy sessions
- Fitness Centers – Protect health in spaces with high physical activity
- Restaurants – Enhance customer comfort and air safety in enclosed dining areas
- Public Facilities – Use for IAQ compliance and environmental control
The Indoor Air Quality Datalogger offers an integrated, user-friendly solution for monitoring CO₂ levels, temperature, and humidity in indoor environments. Its robust features, visual alarms, and real-time data logging make it an indispensable tool for maintaining optimal air quality in any shared space where comfort, health, and energy efficiency matter.