REED Instruments C-380 Refrigerant Leak Detector, Low/High Sensitivity (R134a R410a R22a) Detects all CFCs, HFCs, and HCFCs 15" (390mm) gooseneck for hard to reach areas User adjustable sensitivity (High/Low) Audible (buzzer) and visual (LED) alarm indicators Includes reference leak source, batteries and hard carrying case