APG IRU-9400 High Sensitivity Ultrasonic Level Sensor
The IRU-9400 series provides a versatile range from 6 inches to 35 feet along with a more sensative transducer to detect difficult targets. This sensor is great for non-reflective and/or soft surfaces. With built in technology to compensate for temperature the IRU-9400 is well suited for object detection. At the same time, it is not sealed for harsh environments and is recommended for use indoors and away from dust.