The Mastercool 55200 design allows the user to perform Electronic and UV Leak Detection all with one tool. The "INSPECTOR" offers six levels of sensitivity (15 levels of detection) with a tri-colored LED indicator. This allows the "INSPECTOR" to pin-point leaks as small as 1/10 oz per year. The ultra bright UV light is built into the end of the probe allowing easy access into tight areas. Incorporating both electronic and UV technology into one unit insures that even the toughest leaks can be found. This detector offers revolutionary features and state of the art micro-processing technology. The design sensor delivers an accurate and instantaneous response. It meets SAE J1627 and CE conformity, and comes in a heavy duty custom molded carrying case.