PS15BBK is a Ninigi air mass sensor manufactured by Panasonic. It is designed to measure air mass flow rate in a wide range of applications, such as automotive, industrial, and medical applications. The PS15BBK is a dual-element sensor that uses two thermistors to detect the relative air mass flow rate. The device has a wide measurement range and high accuracy, providing reliable readings in a variety of conditions. It also has a compact design, making it suitable for use in tight spaces. Additionally, the PS15BBK features a low-temperature coefficient, ensuring accurate readings even when the temperature changes.