Posted by a reviewer on Amazon

This is not the case here

Posted by a reviewer on Amazon

To get it up and running just connect as follows sensor vcc gt either the arduino 3

Posted by a reviewer on Amazon

You will get readings of 0 unless you illuminate sensor with a uv source

Posted by a reviewer on Amazon

You should also be able to use a blacklight or direct sunlight not through glass since glass blocks most uv light

Posted by a reviewer on Amazon

Cool toy digital out pin is high and when the beam is reflected back its low

Posted by a reviewer on Amazon

Good product though it would have been nice to get arduino examples i

Posted by a reviewer on Amazon

How to connect to ubidots or thingspeak and better documentation

Posted by a reviewer on Amazon

The ones found online are returning some crazy high levels of pollution so i assume either the firmware or the sensor is not working properly