Features and Benefits: * State-of-the-Art Cold Cathode (CCD) Sensor Technology * 8-LED Tachometer Display * Easy one button operation * Unique "Gearshift" LED display for leak sizing * High output alarm speaker * MADE IN USA The CCD Sensor Technology delivers quick response to leaks and maintains maximum sensitivity throughout the life of the sensor. The 8-LED Tachometer Display enables user to pinpoint exact location of leak. Fully automatic electronic refrigerant leak detector for all HFC, HCFC, CFC, SF6 gasses and blends. Exclusive POWERSHIFT™ software automatically monitors, controls and adjusts all critical instrument settings to ensure maximum leak search results under any job environment. Two separate visual LED displays enables user to pinpoint the exact location of leak source and the approximate size of that leak. Highly resistant to background contaminates including heavy condensation, oils, leak solutions, brake fluid, radiator coolants, washer fluids, etc. High output alarm speaker delivers clear crisp alarm tones. Fully automatic selection allowing detection of a 0.25oz/yr (7g/yr) leak rate of HFC. Operating temp: 0 to 140°F / -18 to 60°C. Includes carrying case, batteries and spare sensor.