The Informant® 2 leak detector allows pinpoint detection of both refrigerant and combustible gas leaks with the same instrument.Its unique combination of state-of-the-art patented sensor technology, advanced software design, and microprocessor controlled circuitry offers you unmatched precision coupled with tremendous speed. It is unquestionably the most sensitive, most reliable, and most accurate leak detector on the market today. And the fastest.Swap sensor tips within seconds and never worry about adjusting sensitivity levels—it's taken care of automatically—even where high levels of background vapors or refrigerants are present. The refrigerant sensor tip is finely tapered to 0.2 inch diameter, so you can get in between coils and fittings, gaining access to hard to reach areas.The Informant® 2 leak detector features an audible indicator with a mute option coupled with sequential LEDs to monitor increasing concentrations of refrigerant or combustible gases. Dual bar graph displays offer visual confirmation no matter what position the instrument is in. A flashing light at the tip of the probe helps to visually define your sampling location.