1The chip pins have been drawn as standard 100mm, which is convenient for dot matrix board. 2Made of PCB material, corrosion-resistant and anti-oxidation, which can increase the service life of the product. 3The photodiodes cross each other in the chip to minimize the unevenness of incident light radiation, thereby improving the accuracy of color recognition. 4The best detection range is 10mm, with small size, easy to carry and store, convenient to use and with good performance. 5White LED, can be controlled on and off, can detect the color of nonluminous objects.