The UM18-211165101 is an ultrasonic, straight range sensor manufactured by Sick. It is a NPN NO/NC sensor which has a sensing range of 30 to 250 mm. It can be used for detecting and measuring the distance, level and motion of objects in automation system. The sensor is easy to install and requires low maintenance as its rugged construction ensures long service life. The features of the sensor include a high switching frequency and precise linearity, fast response time and excellent sensing accuracy, wide operating temperature range J-Code approval, and an LED indicator for visible signaling. It is suitable for applications such as automation, inspection, process control, material handling, robotics, and more.