{
  "id": "sen55",
  "name": "Sensirion SEN55 environmental node",
  "category": "sensor",
  "measures": [
    "particulates",
    "voc",
    "nox",
    "temperature",
    "humidity"
  ],
  "pins": [
    {
      "name": "VDD",
      "role": "power",
      "notes": "Pin 1. Needs 5 V for the fan: use VIN"
    },
    {
      "name": "GND",
      "role": "ground",
      "notes": "Pin 2"
    },
    {
      "name": "SDA",
      "role": "i2c_sda",
      "notes": "Pin 3. Add a pull-up to 3.3 V"
    },
    {
      "name": "SCL",
      "role": "i2c_scl",
      "notes": "Pin 4. Add a pull-up to 3.3 V"
    },
    {
      "name": "SEL",
      "role": "passive",
      "notes": "Pin 5. Connect to GND for I2C"
    },
    {
      "name": "NC",
      "role": "passive",
      "notes": "Pin 6. Not connected"
    }
  ],
  "bus": "i2c",
  "addresses": [
    "0x69"
  ],
  "voltage": "5",
  "model": {
    "shape": "module",
    "size": [
      40.6,
      40.6,
      12
    ],
    "color": "#C9CED4"
  },
  "keywords": [
    "sen55",
    "sen54",
    "sensirion",
    "pm2.5",
    "voc",
    "nox",
    "polveri sottili",
    "qualità aria"
  ],
  "sources": [
    {
      "title": "Sensirion SEN5x datasheet",
      "section": "Pin 1 VDD 5 V, 2 GND, 3 SDA, 4 SCL, 5 SEL, 6 NC; I2C address 0x69, 100 kHz"
    },
    {
      "title": "Sensirion SEN5x datasheet",
      "section": "I2C lines are 3.3 V level; VOC and NOx are index values, not ppm"
    }
  ]
}