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 5950-01-545-8939
NSN 6110-01-395-1727
NSN 5925-01-160-7609
NSN 6135-01-056-4609
NSN 6645-00-804-7987
NSN 7035-00-585-2113
NSN 5990-00-789-1333
NSN 2925-01-430-4206
NSN 6130-01-138-5230
NSN 6685-00-388-6763
NSN 5925-01-208-2341
NSN 6110-00-816-9715