Detailed Description LA-3303 Refrigerant Leak Detector CO Meter and Gas Leak Detector Carbon Monoxide Meter The Refrigerant Leak Detector detects all CFC refrigerants such as R-22, R-124, R-11 and R-12. The ultra-sensitive long life sensor detects the more current, difficult-to-detect HFC refrigerants such as R-134a, R-404A, and new R-22 replacements, R-410A and R-407C. The Refrigerant Leak Detectors long, slim gooseneck probe design is easy to use in close areas and for extending into hard-to-reach areas. Its adjustable alarm, easy one-hand operation and impact resistance storage case add up to value and convenience.  Features: 16 inch gooseneck detector is easy to measure the hard-reached areas High sensitivity and reliable  Easy to use: One-hand operation Tick accelerates when sensor tip approaches leak  Adjustable tick rate to locate leaks quickly and easily  Pinpoint small leaks: Detects all refrigerant leaks even tiny leaks Visual leak detection by LED indicators  Precision sensor detects even the smallest leaks  Includes earphone Jack Specifications:  Sensitivity 100ppm Of R- 134a/ R- 22 Sensor TypeLow power semiconductor  Warm Up TimeApprox.1 minute Response TimeLess than 2 seconds (up to 40% LEL)  AlarmVisible & Audible at 10% LEL for all chlorofluocarbons(CFC).  Power Supply3C cell batteries Battery Life8 hours continuous use, typical Duty CycleIntermittent Probe Length16"ncentrations or gases. Warranty1 year Size(HxWxD): 221x72X46mm Weight: 498g Accessories: Gift box with carrying case, batteries and user manual.