The HL-304IR3C-L3 Infrared (IR) LED by HONGLITRONIC is an electronic component designed for use in applications where infrared signals need to be transmitted and received. This LED is through-hole mounted and has RoHS certification, meaning that it does not contain any hazardous materials in its construction. It is designed for a narrow, specific type of IR signal, which makes it more efficient than other models in this range. As well as this, it can operate in a temperature range from -40°C to +85°C, making it suitable for use in a wide variety of environments and applications.