Patent ID: 8760145

Claim:
An electronic device for detecting an object beneath a wall section of interest, said electronic device comprising: a. a first part comprising an image generator for generating a repeating series of persistent visual elements over said wall section of interest; b. a second part comprising a remote and moveable part in communication with said first part, said second part comprising: i. a first sensor for scanning said wall section of interest and for sensing said object and generating a first signal when the object is present and a second signal when the object is not present; ii. a second sensor for detecting said repeating series of persistent visual elements and generating a third signal when the repeating series of persistent visual elements are detected; iii. a first controller for receiving said first signal and said third signal and for generating a fourth signal for transmission to the first part so that said stationary image generator maintains illuminated said repeating series of persistent visual elements over the object; and, iv. said first controller for receiving said second signal and said third signal and for generating a fifth signal for transmission to the first part so that the stationary image generator extinguishes the repeating series of persistent visual elements when no object is present; c. the result being that a persistent image is displayed on the wall section of interest indicative of the presence of the object located beneath the wall section of interest.