PAR Sensor

Measure Photosynthetically Active Radiation

  • 400~700nm spectral range
  • ±5% accuracy
  • 0 - 2500 μmol/m²/s
  • I2C interface
  • 3.3 - 5 V voltage range

What it is

A PAR sensor in a waterproof aluminum enclosure with a 1.5m cable. The sensor comes pre-calibrated and doesn't require any subsequent calibration.

The base comes with a small tripod, mounting bracket, and bubble level.

The board uses the Qwiic Connect System, an easy-to-use, polarized, push-to-fit connector. No more mistaken connections or soldering header pins. Adafruit calls these connectors STEMMA QT.

Using it

The documentation on the specification, and setup of the sensor is available.

The Arduino IDE, PlatformIO, and Particle.io library is in the respective library manager. Any Arduino compatible board will work. Any Raspberry Pi 3, 4 or Zero will work as well.

A python library is available for the Raspberry Pi.

Arduino C++

Buying it

The PAR sensor, accompanying sensor circuit for taking measurements are included.

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Support, Documentation, and Questions

Sensor Circuit Datasheet

PAR Sensor Datasheet

If you have questions, find a bug, or have any suggestions, go to this project's GitHub page and submit an Issue or Pull Request. Or you can send an email to [email protected].