As people's living standards continue to improve, attention to indoor air quality is increasingly focused on. Carbon dioxide concentration, as a key indicator of indoor air freshness, directly affects the health, comfort, and cognitive efficiency of residents. In the wave of smart homes, how to accurately, stably, and conveniently monitor CO₂ concentration has become one of the core aspects of improving the intelligence level of the home environment. The Tensensor's TXZ19D infrared carbon dioxide gas sensor is an ideal solution designed for this purpose.

    TX-Z19D Carbon Dioxide Gas Sensor

Core Technology, Accurate and Reliable

    The TXZ19D sensor uses the mature non-dispersive infrared (NDIR) principle for detection. This technology utilizes the absorption characteristics of CO₂ in a specific infrared band, exhibiting excellent selectivity, being unaffected by cross-interference from other gases, and having no oxygen dependence, fundamentally ensuring the accuracy and reliability of the measurement results. Compared to traditional electrochemical sensors, NDIR technology also has significant advantages such as long lifespan, non-poisoning, and resistance to moisture interference, making it very suitable for the long-term stable operation needs of home environments.

Superior Performance, Meeting Diverse Scenarios

    This sensor is specifically designed for smart home environments, boasting impressive technical specifications:

    Wide Range, High-Precision Measurement: Offers multiple measurement ranges including 400-2000ppm, 400-5000ppm, and 400-10000ppm, with a resolution of 1ppm and an accuracy of ±(50ppm + 5% of the reading), accurately covering various home scenarios from daily living to densely populated areas.

    Fast Response and Low Power Consumption: Warm-up time is only 1 minute, and the T90 response time is less than 120 seconds, promptly reflecting changes in indoor CO₂. Average operating current is less than 40mA, meeting the low-power design requirements of smart devices.

    Rugged and Durable: Built-in temperature compensation ensures stable output under varying room temperatures throughout the year. Operating temperature range is 0~50℃, and operating humidity range is 0~95%RH, offering strong adaptability. Product lifespan exceeds 5 years, significantly reducing maintenance costs and replacement frequency.

Intelligent Interface, Seamless Integration

    The TXZ19D prioritizes the ease of development for smart home devices, offering dual output modes:

    UART Serial Output: Provides a standard TTL level serial communication interface, facilitating direct connection with mainstream microcontrollers (such as STM32, ESP8266/32, etc.) for data reading and command control, easily integrating into smart home hub systems.

    PWM Waveform Output: Provides pulse width modulation signals, enabling concentration information acquisition without complex protocol parsing, simplifying the design and programming of downstream devices.

    Furthermore, the sensor has a reserved HD zero-calibration pin, supporting easy zero-point calibration to ensure long-term accuracy.

Broad Application Prospects

    With its compact size (only 5g), excellent performance, and flexible interface, the TXZ19D sensor can be widely used in multiple subsystems of smart homes:

    Fresh Air Systems and Air Purification Equipment: Real-time monitoring of indoor CO₂ concentration, automatically starting or stopping fresh air intake or adjusting airflow, ensuring energy savings while maintaining air freshness.

    Intelligent Environmental Monitoring Terminal: As the core sensing unit, it is integrated into smart speakers, panels, or standalone detectors to provide users with visualized air quality data and historical trends.

    Intelligent Air Conditioning and HVAC Control: Combining temperature and humidity information, it achieves comprehensive environmental regulation that better meets human comfort and health needs.

    In today's pursuit of a healthy, comfortable, and smart home life, choosing a precise and reliable sensor is the cornerstone of building an efficient environmental management system. The TXZ19D infrared carbon dioxide gas sensor, with its leading NDIR technology, superior stability, convenient integration, and long lifespan, has become the preferred choice for smart home manufacturers and developers. It is not just a sensor, but a key sensing element for achieving a smart and healthy living space. Please feel free to contact us if you have any needs:

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