AccuTools eL-320 Combustible Gas Leak Detector is a portable gas detector that is easy to use and quickly finds both large and small leaks. The AccuTools eL-320 is designed for simple one-button operation, locates using two sensitivity modes, and indicates both audibly and visually when a leak is found. The AccuTools eL-320 is approved by Underwriter's Laboratory for use in hazardous locations and self-calibrates, reducing maintenance costs.