The General Tools PNG1 is a pen-style combustible gas leak detector, designed for quick and accurate detection of gas leaks in residential and commercial settings. This compact and lightweight tool features a sensitive sensor that detects a wide range of combustible gases, including methane and propane. Its ergonomic design allows for easy handling and portability, making it ideal for on-the-go inspections. The detector includes a clear display for easy reading of results and is equipped with audible and visual alerts for immediate feedback. This essential tool is perfect for HVAC professionals, plumbers, and anyone needing to ensure safety in gas applications.