Amazon.com has the Black & Decker TLD100 Thermal Leak Detector on offer for $49.99 with free standard shipping. 'The Black & Decker Thermal Leak Detector helps you increase the efficiency of your home's insulation by finding weak areas that can lead to higher heating and cooling bills. YouÆll instantly identify problem areas around drafty windows and doors, and uncover hidden leaks and insulation "soft spots" around your home. Check windows, ducts, and walls with the thermal reference light that indicates hot and cold spots. You can even use the detector to diagnose engine misfires or check your refrigerator and freezer settings.'
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