The Adafruit SEN54/SEN55 Adapter Breakout lets you quickly connect a Sensirion SEN5x environmental sensor node to any microcontroller or single-board computer via STEMMA QT / Qwiic — no soldering or breadboarding required. The adapter handles the SEN5x's special cable connection and 5 V power requirement automatically.

A built-in switch-cap boost converter generates 5 V at 100 mA to power the SEN5x's fan and electronics, even when running from a 3 V power source. Simply connect the SEN5x with a 6-pin JST GH cable, then plug a STEMMA QT cable into your development board's I2C port.

Key Features

• SEN5x Compatible – Works with both SEN54 and SEN55 environmental sensor nodes
• JST GH Connector – 6-pin connector for direct plug-in to the SEN5x cable
• 5 V Boost Converter – Generates 5 V at 100 mA from 3 V input to power the SEN5x fan and electronics
• STEMMA QT / Qwiic I2C – Solderless connection to any compatible development board

Supported Measurements (via SEN5x)

• Temperature and humidity
• Volatile organic compounds (VOC index)
• Particulate matter: PM1, PM2.5, PM4, and PM10
• NOx index (SEN55 only)

Ideal For

• Comprehensive indoor air quality monitoring
• Particulate matter and VOC measurement stations
• Environmental research and data logging
• Smart building air quality systems

Package Contents

• 1× Adafruit SEN54/SEN55 Adapter Breakout

Resources

• Sensirion Arduino Library (GitHub)
• Sensirion Python Library (GitHub)