K33 CO2 Sensor

The K33 CO₂ Sensor Module is a versatile, high-accuracy NDIR-based carbon dioxide sensor designed for applications requiring precise CO₂ measurements over a wide range. Part of the K-Series family, the K33 offers robust performance for indoor air quality (IAQ), greenhouses, industrial safety, HVAC systems, and scientific research.

With multiple configuration options (analog, UART, I²C), the K33 is easy to integrate into embedded systems or monitoring devices. It features long life, low maintenance, and automatic baseline correction, making it a reliable solution for continuous CO₂ monitoring.

• Target Gas: Carbon Dioxide (CO₂)

• Detection Principle: Non-Dispersive Infrared (NDIR)

• Measurement Range:

  • Standard: 0 – 10,000 ppm

  • Optional: up to 30,000 ppm

• Accuracy: ±30 ppm ±3% of reading

• Output Interfaces:

  • UART (TTL level)

  • I²C

  • Analog output (0–4V)

• Response Time (T90): < 30 seconds

• Operating Voltage: 4.5 – 5.5V DC

• Power Consumption: ~15 mA average

• Operating Temperature: 0°C to +50°C

• Operating Humidity: 0–85% RH (non-condensing)

• Warm-up Time: < 60 seconds

• Sensor Life Expectancy: >15 years (typical indoor use)

• Applications:

  • Indoor Air Quality Monitoring

  • Agricultural Greenhouses

  • HVAC Systems

  • Scientific Research & Environmental Testing

  • Smart Home & IoT Devices