The Gravity: Electrochemical O₂ Sensor is a compact, high-sensitivity module designed for accurate ambient oxygen detection. With I2C interface, wide voltage support (3.3V–5.5V), and anti-interference stability, this sensor is ideal for air quality monitoring, portable environmental devices, and smart agriculture applications.
Key Features
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Electrochemical O₂ Detection: Measures oxygen levels from 0–25%Vol, with ±0.15% resolution.
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I2C Digital Output: Easy to integrate with Arduino, ESP32, and Raspberry Pi.
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Wide Voltage Compatibility: Supports both 3.3V and 5V systems, ideal for cross-platform projects.
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High Stability: <2% signal drift per month for reliable long-term readings.
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Fast Response: Reacts in ≤15 seconds, ensuring real-time monitoring performance.
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Durable Design: Operates in -20°C to 50°C and 0–99%RH, with a >2 year lifetime in air.
Technical Specifications
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Gas Type: Oxygen (O₂)
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Detection Range: 0–25%Vol (Max Limit: 30%Vol)
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Resolution: 0.15%Vol
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Sensitivity: (0.10±0.05) mA (in air)
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Repeatability: <2%
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Stability: <2% per month
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Response Time: ≤15s
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Operating Voltage: 3.3–5.5V DC
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Output Signal: I2C
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Temperature Range: -20°C to 50°C
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Humidity Range: 0–99%RH (non-condensing)
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Pressure Range: 101kPa ±10%
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Lifetime: >2 years (in air)
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Dimensions: 37 x 27 x 24.5 mm
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Weight: 0.037kg
Comparison Table
| Model | Range | Output | Calibration | Temp Compensation |
|---|---|---|---|---|
| SEN0322 | 0–25% | I2C | Manual | × |
| SEN0465 | 0–25% | I2C, UART, Analog | Factory | ✓ |
| SEN0496 | 0–100% | I2C | Manual | × |
Shipping List
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1 × Gravity: Electrochemical Oxygen / O₂ Sensor (0–25%Vol, I2C)
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1 × Gravity-4pin I2C Cable
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4 × M3×10 Nylon Post
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8 × M3×5 Screws