Mastercool offers the 55500 2-in-1 Electronic UV Leak Detector with a heated diode sensor for improved leak detection. Features include six levels of sensitivity, with 15 overall detection levels. A tri-colored indicator for identifying leaks as small as 1/10 oz./year. A brighter UV light on the end of a flexible probe for accessing tight areas. Comes with UV enhancing safety glasses, a custom-molded carrying case and rechargeable NiCAD battery.