A self-contained multifunctional diffuse ultrasonic sensor with a sensing range from 40-300 mm and 80-800 mm. One switching output - easily set up for “windows” detection with two setpoints. NO or NC output is selectable. A sturdy one-piece polyester housing provides the perfect packaging for the sophisticated microprocessor controlled and digitally filtered sensor electronics. Excellent EMC performance and precision are typical features of this sensor on true distance measurement.