The RPS-400-30 Ultrasonic Proximity Sensor is a sealed transducer which provides protection against dirt and moisture. It has a 22mm barrel housing and is completely self contained. Features include: Self Contained Narrow Sensing Beam High Frequency 222khz Operates in Hostile Environments Operating Voltage 12-30VDC NPN Transistor Output Externally Adjustable Sensing Range Click below to view the datasheet: Datasheet Enquire Now