
SEN0321 · DFRobot

Compact ozone sensor with I2C output measures 0-10ppm, supports various mainboards, high sensitivity, stability, and anti-interference. Ideal for air quality monitoring. (DFRobot SEN0321)
| Part number | SEN0321 |
|---|---|
| Manufacturer | DFRobot |
| Category | Sensors › Gas & Air Quality |
| Pins | 4 |
Gravity: Electrochemical Ozone / O3 Sensor (0-10 ppm, I2C) pinout
| Pin | Name | Type | Description |
|---|---|---|---|
| 1 | VCC | power | |
| 2 | GND | ground | |
| 3 | C (SCL/TX) | bidirectional | I2C SCL, or UART - see the module's pinout |
| 4 | D (SDA/RX) | bidirectional | I2C SDA, or UART - see the module's pinout |
Schematic symbol and footprint
Schematic symbol
Footprint: JST PH 2.0 mm 4-pin through-hole (Gravity PH2.0-4P) — to scale, pad 1 in yellow (mm). Check against the datasheet before ordering PCBs.
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ENS160

Gravity: Electrochemical Oxygen / O2 Sensor (0-25%Vol, I2C)SEN0322