1、Low-cost color recognition sensor module is with low power consumption, small size and easy installation. 2、Color sensor's working principle is that the lighting LED emits light and illuminates the measured object. 3、After the object, return the light to detect the RGB ratio value through the filter, which is to identify the color based on the RGB ratio. 4、This module has two ways to read data, namely serial UART (Time To Live level) or IIC (2-wire). 5、Baud rate of the serial port is 9600bps and 115200bps, which can be configured. 6、There are two modes of continuous and inquiry output, and the settings can be saved after power off. 7、And there are 7 simple color recognition, no need to calculate RGB values. Also, the sensor can adapt to different working environment and connect with single chip computer and computer. 8、The module can additionally set the working mode of a separate sensor chip, as a simple sensor module, the microcontroller unit does not participate in data processing. 9、Provide 51, stm32 microcontroller communication program, Schematic diagram and internal MCU source number are not provided.