[Detect a variety of combustible gases] Detects a wide range of combustible gases, including methane, natural gas, propane, butane, coal gas, gasoline, toluene, water vapor, alcohol, ketones, carbon monoxide, and more. Suitable for use by homeowners, professionals, or real estate agents to detect gas concentrations from 50 to 10,000 parts per million. [High Sensitivity and Fast Response] Features two sensitivity settings with response within 5 seconds, faster than many handheld detectors. Switch between high and low sensitivity modes for different environments, enabling quick and easy detection of gas leaks in hard-to-reach areas. [Audible and Visual Alarm] Emits a continuous 85dB audible alarm and turns the LCD light red when gas is detected. Includes a digital backlit LCD screen that clearly displays gas levels for easy reading in low light. Operates on batteries with a low battery indicator (2 AAA batteries not included). Automatically powers down after approximately 10 minutes of inactivity to conserve power. [Compact and Portable] Designed with an intuitive interface, easy-to-use switches, and one-hand operation. Features a rubberized exterior for a secure grip. Pen-style design allows for convenient portability and handling. Ideal for detecting even small gas leaks and potential exposure to harmful substances. [Wide Range of Applications] Place this handheld detector in areas where a gas leak may be suspected and wait for it to display current gas levels. Commonly used to detect gas leaks in lawn mowers, basements, RVs, factory workspaces, gas stoves, water heaters, and other household appliances. A safe and reliable solution for gas leak detection.