T&D RTR-576 Multi-Parameter Data Logger for CO₂, Temperature and Humidity with Remote Monitoring Capability

Wireless data logger for temperature, humidity, and CO2 in local and remote environments — CO2, temperature, and humidity monitoring in occupied spaces

This instrument fits facility managers, schools, offices, and indoor-air-quality programs that need a practical way to capture data during watching ventilation conditions and documenting environmental changes in classrooms, workspaces, and remote sites. 

Great for local and remote locations such as schools, workshops, and libraries

The RTR-500/RTR500B series is widely recognized in environmental monitoring studies for its precise measurement of indoor air quality. Peer-reviewed articles highlight its accuracy in tracking CO2 levels, temperature, and humidity in classrooms and office environments, confirming its effectiveness for real-time monitoring. Customers and industry experts consistently praise its reliability and ease of setup, while common applications include indoor air quality management, HVAC system monitoring, and maintaining optimal conditions in sensitive workspaces such as laboratories and archives.

Logged data can be automatically sent via network or mobile communication to be saved in cloud storage or to a specified location. The RTR-576 is a three-channel data logger designed to measure and record CO2 concentration, temperature, and humidity. External devices such as buzzers and lights can also be connected to the contact output terminal to provide instant on-site notification, signaling when ventilation may be needed.

Wireless Communication and Data Management

RTR-576 loggers have a wireless radio communication range with compatible base units of up to 150m (500ft). Data can be transmitted from a logger to a base unit and then automatically uploaded to cloud storage or saved to a specified location. Data can also be checked on your PC screen or on site with one of our compatible data collectors. RTR-576 is useful for measuring and managing CO2 in rooms and buildings from both near and far.

Usage Guidelines and Sensor Accuracy

*1: Make sure to use the data logger within the operating environment as listed in the specifications.

*2: When continually used in environments with temperatures above 60°C, accuracy of humidity measurements will decrease over time. Also, humidity cannot be measured at temperatures below -20°C.

*3: Stated value is the measurement accuracy of the CO2 sensor when Auto Calibration is operating properly. A change in atmospheric pressure directly influences the reading of CO2, which can cause measurement errors; a decrease in pressure by 10hPa results in a relative decrease in CO2 by 1.6%. In such a case, we recommend carrying out the “Atmospheric Pressure Correction” function found in the software for the Base Unit.

*4: Only “Endless” is available when using the RTR500BW, RTR500BM, RTR-500NW/AW or RTR-500MBS-A as a Base Unit.

*5: For communication with the Data Collector RTR-500DC (Note: Optional serial communication cable TR-6C10 is required.)

*6: In order to use the external alarm terminal, please purchase the optional alarm connection cable (AC0101).

*7: The listed battery life is based on the following usage conditions: Recording at 10 second (or longer) intervals, Current Readings Transmission every 10 minutes, and Recorded Data Transmission once a day. Battery life also varies depending on ambient temperature, radio environment, frequency of communication, etc. The specifications listed above are subject to change without notice.

To extend your environmental monitoring capabilities beyond the core CO₂ 

For applications requiring compact and splash‑resistant multi‑point environmental tracking, the All‑in‑One Wireless Temperature and Humidity Logger provides robust, automated data collection and wireless communication with base units for seamless trend analysis. In larger facilities where multi‑zone temperature oversight is essential, the Wide Range Wireless Temperature and Humidity Data Logger offers broad coverage with reliable logging, making it a valuable addition to any comprehensive indoor air quality strategy.

Technical Q&A

What environments are best suited for the RTR-576?

The RTR-576 is ideal for classrooms, offices, workshops, libraries, laboratories, and any indoor spaces where monitoring temperature, humidity, and CO2 levels is important for comfort and safety.

Can the RTR-576 send alerts in real-time?

Yes, the RTR-576 can connect to external devices like buzzers or lights via the contact output terminal to provide instant notifications when CO2 levels or other parameters exceed set thresholds.

How is the data from the RTR-576 accessed and stored?

Data can be transmitted wirelessly to a compatible Base Unit, then automatically uploaded to cloud storage, saved to a specified location, or viewed directly on a PC or data collector device.

What is the expected battery life?

Battery life depends on usage, temperature, and communication frequency. Under standard conditions—recording every 10 seconds, transmitting current readings every 10 minutes, and sending recorded data once a day—battery life is as specified by the manufacturer but may vary in different environments.

Are there any limitations to humidity and CO2 measurements?

Humidity accuracy decreases above 60°C and cannot be measured below -20°C. CO2 readings may be affected by changes in atmospheric pressure, but the software offers a correction function to adjust measurements accordingly.

When is data logging especially valuable?

Logging is valuable when trends matter more than a single spot reading, such as curing history, storage conditions, verification records, or alarm-driven incident response.

Who is this best suited for?

Facility managers, schools, offices, and indoor-air-quality programs will get the most value when they need repeatable measurements plus a record they can review, export, or act on later.

Because it combines Channels: CO2 Concentration, Temperature, Humidity, Range CO2: 0 to 9999ppm, Temperature: 0 to 55°C, this product is a strong fit for CO2, temperature, and humidity monitoring in occupied spaces where documentation and repeatability are important.