The Bivar ELM55503RD LED Circuit Board Indicators are a great choice for any application requiring a bright, reliable light source. These indicators feature a 3mm red 655 nm LED assembly that is designed to provide superior illumination and visibility. The indicators are easy to install and require minimal maintenance. They are also highly durable and resistant to shock and vibration. The indicators are perfect for use in a variety of applications, including automotive, industrial, and medical. With their bright, reliable light source, these indicators are sure to provide superior performance and reliability.