Abstract: An electronic device for detecting an object beneath a wall section of interest has an elongate rectangular base for temporarily mounting to the wall section of interest and for carrying a display panel to display a persistent image of the object. The device can be a two-part device comprising a first part comprising a light projector and a second part comprising a sensor. The device can also be a single part device where the display and the sensor are incorporated into a single body.

Abstract: An electronic device for detecting an object beneath a wall section of interest has an elongate rectangular base for temporarily mounting to the wall section of interest and for carrying a display panel to display a persistent image of the object. The device can be a two-part device comprising a first part comprising a light projector and a second part comprising a sensor. The device can also be a single part device where the display and the sensor are incorporated into a single body.

Abstract: A self-powered illumination device includes an illumination source protruding from its lower surface for projecting light into a body of water to provide light that is emitted preferentially outwardly to illuminate the sides of a pool. Light emitted with an upward angle of inclination strikes the underside surface of the water-air interface surrounding the device and is reflected outwardly and laterally away the from the light source after striking such underside surface. Preferably, the illumination source has a length that extends downwardly that is commensurate or greater than its width and may be in the form of a fluorescent tube. The illumination device is fully self righting when inverted on the surface of a body of water.

Abstract: The present invention is a system for managing heat stress by both controlling the core body temperature of an individual and facilitating hydration. The system provides cooling to an individual through means of a liquid coolant such as water which is circulated by a pump through a heat exchanger to a heat exchange garment. The liquid coolant passes through the heat exchange garment where it extracts heat, increasing in temperature as a result of heat removed from the individual wearing the garment. The liquid coolant is then returned to the heat exchanger where it is again cooled. The cycle is then repeated. A drinking outlet provides a means for hydrating the wearer.