TX711-A70-C3H8 is an NDIR (non-dispersive infrared) combustible gas sensor specifically designed for propane gas detection. Developed based on the principle of infrared spectral absorption, it features oxygen-free operation, anti-interference capabilities, low power consumption, and long lifespan. Equipped with temperature and humidity compensation and a waterproof and corrosion-resistant gas chamber, and using TTL serial digital output, it is a core detection accessory for home gas safety and HVAC equipment.

    Core Product Advantages

    (I) Excellent Detection Performance, Adaptable to Complex Home Environments

    High selectivity, eliminating false alarms: Resistant to interference from acetic acid, ethanol, and water vapor; unaffected by kitchen fumes and volatile gases, ensuring stable detection results.

    Wide-range temperature and humidity adaptability: Built-in temperature compensation; operating temperature -10℃~60℃; operating humidity 0~95% RH (non-condensing); suitable for use in both northern and southern home environments.

    Accurate detection and rapid response: Measurement range 0~1.7% VOL, resolution up to 0.001% VOL, precise error control in temperature zones; response time T63 < 30s, capable of quickly detecting propane leaks.

    Never poisoned, no oxygen deficiency hazard: Unlike traditional sensors, it does not rely on oxygen to operate, and can stably detect in low-oxygen spaces such as enclosed kitchens and bathrooms.

    (II) Ultra-low power consumption, suitable for long-term household power supply

    3.3V power supply, clean air, active upload mode, average current < 30μA; average current in high-concentration environments is only 120μA.

    5V power supply peak current 40mA, low power consumption design significantly extends the battery life of battery-powered household devices, reducing electricity costs.

    (III) Ultra-long lifespan, reduced maintenance

    The product is designed for a lifespan of over 10 years, far superior to traditional gas sensors.

    The gas chamber uses a composite membrane layer treatment, waterproof, corrosion-resistant, and oil-resistant; the shell structure is robust and not easily damaged in daily use.

    (IV) Compact Size and Easy Integration

    Weighing only 5g, the sensor has a compact structure and can be easily embedded in various small household devices without occupying internal space.

    Key Technical Parameters

    Basic Electrical: Power supply voltage DC 3.3~5.5V, interface level 3.0V (compatible with 5V).

    Detection Specifications: Detects propane, range 0~1.7% VOL, resolution 0.001% VOL, multi-temperature grading ensures detection accuracy.

    Timing Parameters: Preheating time 180s, data uploaded every 10s when concentration is below 0.085% VOL, high-frequency upload every 1s after exceeding the limit.

    Environmental Parameters: Operating temperature -10℃~60℃, storage temperature -20℃~60℃, applicable humidity 0~95% RH (non-condensing).

    Main Application Scenarios

    Household combustible gas alarm: As the core detection element, used for monitoring liquefied gas/propane leaks in kitchens and indoors, achieving audible and visual warnings. Home HVAC Equipment: Integrated into gas boilers, gas water heaters, and other products, it monitors gas leaks in the equipment pipelines, improving overall safety.

    Portable Gas Accessories: Compatible with portable gas cylinders and outdoor portable gas canisters, featuring alarms that meet mobile usage needs due to their low power consumption.

    Smart Home Systems: Connects to a whole-house smart gateway, enabling remote gas data push and intelligent linkage, creating an integrated home security system.

    TX711-A70-C3H8 infrared propane sensor addresses pain points in home scenarios, featuring high precision, strong anti-interference, ultra-low power consumption, and a ten-year lifespan as its core highlights. Combined with a simple communication protocol and assembly process, it balances user experience with mass production feasibility. Whether in traditional gas security equipment or smart home gas products, this sensor is a high-performance, high-reliability core component, providing comprehensive protection for home gas safety.

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