Features: Ensure your safety with Combustible Gas Detectors Alarm Tester, a tool for quick gas leak detection. Featuring a battery operated or Rechargeable for easy portability, this device is equipped with a high sensitivity Sensors for rapid and accurate gas leakage identification. for homeowners, industrial maintenance staff, and construction workers who require regular monitoring of combustible gases. for use in domestic kitchens, factory workshops, construction site, or any area where there is a potential risk of combustible gas leaks. The alarm system of this gas Analyzers alerts you instantly to hazardous conditions, helping to maintain a safe environment at all times. Specifications: Materials: Plastic Size:17x3x4cm Styles: Battery Version, Rechargeable Version(optional) Package Includes: 1PC Gas Leak Detectors note: Please allow 0-1cm error due to manual measurement. make sure do not mind before bid. Due to the differenceS between different monitors, the picture may not reflect the actual of the item. Thank you!