Pressure sensors are not a specific brand but a category of devices used to measure pressure in various industrial and commercial applications. Leading manufacturers of pressure sensors include companies like Honeywell (USA), Siemens (Germany), and Endress+Hauser (Switzerland). These sensors are widely used in industries such as automotive, aerospace, medical, and manufacturing. Key products include piezoresistive, capacitive, and optical pressure sensors, which cater to different accuracy and environmental requirements. Companies like TE Connectivity (Switzerland) and Omega Engineering (USA) also provide specialized solutions for harsh or high-precision environments.