A device designed to transmit an ultrasonic wave and to receive its echo to detect the presence and/or the position of foreign objects in a limited field of vision. The item's field of view is very small compared to security type motion detectors. See also: transducer,motional pickup and motion detector. exclude: detector,proximity,inductive.
NSN 6220-01-215-8627
NSN 4140-00-143-4772
NSN 6130-01-462-0155
NSN 6150-00-365-1711
NSN 7035-00-200-5162
NSN 5855-01-433-2220
NSN 5998-01-499-1686
NSN 5925-01-234-1326
NSN 6130-01-019-8759
NSN 5930-00-554-1064
NSN 6685-01-197-7703
NSN 6135-00-838-0706