The relevant pressure sensor of the Sencoch range hood is applied to the range hood, which can accurately sense the pressure change of the flue. Its performance advantages are obvious. It can quickly respond to pressure fluctuations, automatically adjust the suction force, and exhaust smoke efficiently. It has high-precision measurement and accurately reflects the flue condition. It has strong stability, anti-interference, durable and reliable, and improves the use effect and service life of the range hood.