The Thermal Leak Detector makes it easy to monitor your home's energy efficiency by finding areas that let heat out and cold air in. Simply aim, depress the trigger, and scan the laser beam across the area you want to inspect. The temperature on your LCD will change and you can easily find those problem areas. The detector also displays temperatures in either Fahrenheit or Celsius on the LCD screen. Check for drafts or leaks around your fireplace, recessed lighting, electrical outlets, along floor molding, or any place that may have improper seals, caulking, or seams that aren't immediately visible. Plugging leaks can save up to 25-Percent on heating and cooling costs! Check temperatures of surfaces you can't touch (car engines, around the fire places, etc)
Also great around the kitchen to check the surface temp of pans or to tease you cat with the laser pointer.