The OKY3200 LED module from OKYSTAR is a 5mm module that has a voltage range of 2 to 2.5 volts. It can be used in a variety of applications, such as in signal lights, optoelectronics and other industrial equipment. The LED has a dual colour design that enables it to emit either a red or green colour depending on the input voltage. It is highly reliable, thanks to its robust design and long lifespan, making it a popular choice for many different applications.