The Superior AccuTrak VPEUltrasonic Leak Detector allows technicians to pinpoint leaks in air conditioning and refrigeration systems without changing tips or components. The detector can easily find leaks of any type of refrigerant or gas, even as small as 1.5 oz. per year of refrigerant or hear a 5 psi leak up to 30' away. The detector also allows technicians to hear the sound of a tiny leak clearly and distinguish it from other noises. Other features include using the touch probe to hear internal ultrasound to quickly diagnose malfunctioning valves and bearings, troubleshooting a thermal expansion valve (TXV) in just five minutes, and using the sound generator to artificially "sound pressurize" any enclosure or vessel to find leaks. The AC frequency response is 36kHz to 42 kHz, and the set includes a headset, probe, carrying case, wave guide, and a battery.