is a lightweight, hand-held device which has similar properties to a flashlight. The sensor itself detects objects by measuring the distance of a vibration of the brief pulses of HF sound it emits. The device will then tell the person how close an object may be.
MOWAT SENSOR: “A mowat sensor detects the distance of a vibration of brief pulses of the high-frequency it emits, thereby calculating that objects distance.”