The UA18CAD22NGM1TI is a diffuse ultrasonic sensor designed for long-range distance measurement and level detection applications. It features a rated operating distance of 200–2200 mm with a blind zone of =200 mm, a beam angle of ±7°, and a resolution of 1 mm. The sensor provides dual outputs: a 4–20 mA analog output for continuous distance monitoring and an NPN digital switching output (window detection) for discrete control. It operates on 15–30 VDC power supply with a linearity error of 1% and repeatability of 0.5%, ensuring high measurement accuracy. The M18 cylindrical PBT housing with M12 plug connection and 2 m cable option provides robust protection (IP67) against environmental interference, making it ideal for industrial distance measurement, level measurement, diameter measurement, and loop control applications.