ALS-PT19 Analog Light Sensor Breakout



  • Adafruit
Availability: In Stock


SKU: SEN-090 Manufacturer: Adafruit Industries Mfg Part Number: 2748 Category: Tags: , , , ,


The ALS-PT19 analog light sensor is a great way to upgrade a project that uses a photocell and needs RoHS compliance. Unlike the standard CDS photocells, these do carry a ROHS certification. We find these sensors also do a better job measuring the light level in the human vision range due to the high rejection ratio of infrared radiation found with this sensor.

It’s a pretty simple sensor; just give it 2.5V-5.5V or so to power it. Now measure the analog voltage on the OUT pin. That’s it! The voltage will increase when the sensor detects more light.



  • Input Voltage: 2.5 – 5.5VDC
  • Analog Output




May We Also Suggest…

Adafruit BH1750 Light Sensor – STEMMA QT / Qwiic
Price: $8.95
BH1750FVI Digital Light Sensor
Price: $12.95
CDS Photocell
Price: $0.95
SI1145 Digital UV Index / IR / Visible Light Sensor
Price: $14.95


  Difficulty Level

Soldering Skill: Beginner
Prototyping Skill: Beginner
Programming Skill: Beginner

  Product Certifications

  Product Attributes

Weight: 2 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is Final Sale and cannot be returned once purchased. 

More Information:
For more information on our Warranty and Return Policies, please consult our   Terms of Service


There are no comments yet.

Be the first to comment on “ALS-PT19 Analog Light Sensor Breakout”

Your email address will not be published. Required fields are marked *