The GY-33 TCS34725 is a Colour-Recogintion-Module, the RGB-filter capture the light and match it with the value by which you can recognize the colour. The inner MCU can be used to read the data. The brightnessof the LED can be adjusted. Other advantages are the low electricity consumption and the easy installation. Examples of application are intelligent roboters and didactic and laboratory instruments.
Communication: I²C-interface, UART
Operating Voltage: 3-5 V