The Baumer FFDK 16P50Y5 11004231 is a liquid level sensor equipped with a pulsed infrared diode light source and an LED red output indicator. It operates without sensitivity adjustment and has a wavelength of 950 nm. Designed for use with pipes or tubes with an outer diameter of 3 to 7 mm and a maximum thickness of 1 mm, it features a fast response and release time of less than 2 ms. The sensor supports a voltage supply range of 10 to 30 VDC, consumes a maximum of 25 mA with no load, and has a voltage drop of less than 1 VDC. It offers both light and dark operating modes, switchable via its PNP output circuit, and can handle an output current of up to 100 mA. Safety features include short circuit and reverse polarity protection. The sensor's compact, rectangular housing measures 16 mm in width, 28 mm in length, and 26 mm in depth, made from durable PC material. It connects via a 3-pin, 2-meter cable and operates within a temperature range of -10 to +55 °C. The device is rated at IP 50 for protection against dust. For more detailed information, you can access the datasheet [here](https://www.baumer.com/medias/__secure__/FFDK_16P50Y5_web_EN.pdf?mediaPK=8799890505758).