The DY-PD234-6B with Ambient Light Sensors Through Hole RoHS manufactured by TONYU is an ambient light sensor with a through-hole design and RoHS compliance. It is a 4-pin device that detects ambient light levels, including infrared, ultraviolet, and visible light. The integrated circuit used in the device is a dual channel photodiode, allowing both the ultraviolet and visible light ranges to be monitored. It is capable of sensing both low and high levels of light with a photodiode connected to a wide common-mode voltage range. Additionally, the device includes noise reduction technology to reduce interference and comes with a PD234/6A marking code.