C & K Systems, Inc.

Richard J Hess

Stephen A Rickman

Richard A Johnson

An intrusion detector operating mode selection circuit sets an intrusion detector operating mode responsive to an encoded acoustic signal. An acoustic signal decoder receives an encoded acoustic signal and generates a mode selection signal in response thereto. The encoded acoustic signal is a plurality of spaced-apart acoustic pulses encoded by the relative inter-pulse timing of the spaced-apart pulses. A mode of the intrusion detector is set responsive to the mode selection signal.

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Woodland, CA, United States of America

Richard J Hess