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Precision Oxygen & Gas Sensors
Engineered for Reliability

Trusted electrochemical, infrared, and photoelectric gas detection solutions from Shenzhen Yijiajie — powering safety, medical, and industrial applications worldwide.

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About Shenzhen Yijiajie

Shenzhen Yijiajie Electronic Co., Ltd. is a leading manufacturer of high-performance gas sensors based in China, specializing in oxygen, carbon dioxide, nitrogen dioxide, and a wide range of electrochemical and infrared detection technologies.

With over two decades of experience, we deliver reliable, leak-free sensors used in medical devices, industrial safety systems, environmental monitoring, and smart building automation. Our products meet international standards and are trusted by engineers and OEMs globally.

200+
Oxygen Sensors
1300+
Gas Sensor Models
10K+
Global Clients
8 Yrs
Max Sensor Life
Factory and sensor production line

Our Premium Sensor Products

Explore our comprehensive range of high-sensitivity, long-life gas sensors for medical, industrial, and environmental applications.

Oxygen Gas Sensor O2-A2 O2-A3

Oxygen Gas Sensor O2-A2 / O2-A3

  • Technology: Electrochemical
  • Range: 1–25% Vol. O₂
  • Overload: 30% Vol. O₂
  • Use: Gas analyzers, leak detection
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MAX250A R125P04-001 Oxygen Sensor

MAX250A R125P04-001 Oxygen Sensor

  • Principle: Electrochemical
  • Range: 0–100% O₂
  • Life: Up to 8 years
  • Output: Stable analog signal
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NO2/C-1 Nitrogen Dioxide Sensor

NO2/C-1 Nitrogen Dioxide Sensor

  • Type: Electrochemical
  • Range: 0–20 ppm NO₂
  • Application: Air quality monitoring
  • High Sensitivity: Continuous detection
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SCD30 Carbon Dioxide Sensor

SCD30 NDIR CO₂ Sensor Module

  • Technology: NDIR (Non-Dispersive Infrared)
  • Range: 0–40,000 ppm CO₂
  • Interface: I²C, UART
  • Use: Indoor air quality, HVAC
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R2868 UV Photodiode Sensor

R2868 UV Photodiode Sensor

  • Type: UVTRON UV On/Off Detector
  • Sensitivity: High UV detection
  • Application: Flame detection, UV monitoring
  • Response: Fast, reliable
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HAFBLF0750CAAX5 Medical Air Flow Sensor

HAFBLF0750CAAX5 Medical Air Flow Sensor

  • Range: 50–750 SCCM
  • Type: Digital bidirectional
  • Accuracy: High precision
  • Use: Ventilators, anesthesia machines
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3FF Carbon Monoxide Sensor

3FF CO Gas Sensor (3-Electrode)

  • Range: 0–4000 ppm CO
  • Overload: 20,000 ppm
  • Filter: Acid gas filtering
  • Use: Industrial safety, HVAC
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SM3041-005D-C-3S Pressure Sensor

SM3041-005D-C-3S Pressure Sensor

  • Type: Differential Digital
  • Pressure: 5 PSI
  • Voltage: 3.3V
  • Accuracy: ±1%
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View All 1300+ Sensor Models

Why Choose Our Sensors?

Engineered for performance, durability, and precision in critical applications.

High Reliability

Leak-free design and stable output ensure consistent performance over time.

Fast Response

Rapid detection and signal output for real-time monitoring and safety.

Environmental Safety

Used in air quality systems, pollution control, and green technology.

Medical Grade

Certified for use in ventilators, anesthesia, and patient monitoring.

200+
O₂ Sensor Models
15+
Sensor Types
100K+
Units Shipped
8 Yrs
Max Lifespan

Frequently Asked Questions

Get answers to common questions about our sensors and services.

What is the typical lifespan of your oxygen sensors?

Most electrochemical oxygen sensors last 2–3 years in normal conditions. Some models, like the MAX250A, offer up to 8 years of operational life.

Do you offer custom sensor solutions?

Yes, we support OEM/ODM services and can customize range, output, packaging, and integration for your specific application.

Are your sensors suitable for medical devices?

Absolutely. Many of our oxygen and airflow sensors are designed and tested for use in ventilators, anesthesia machines, and patient monitors.

What certifications do your products have?

Our sensors comply with international standards and are used in CE, RoHS, and ISO-compliant systems.

Get in Touch

For quotes, technical support, or custom solutions, visit our official website.

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Shenzhen Yijiajie Electronic Co., Ltd.
Manufacturer of Oxygen, CO₂, NO₂, and Infrared Gas Sensors

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