Rgb color sensor

Hi,

I have a rgb sensor which is the size of a chip with only one led. It does not have S0,S1,S2,S3 which the other rgb sensor has. I have search the Internet and I did not find a single thing related to that color sensor.

I have to detect only red color. Please help me with the connections.

Can you post a picture or link to the sensor you have please?

If you put a piece of red cellophane over the sensor, it will only read red light.