This product with novel design and integrated function assembles all components on the handcart and adopts big norms integrated circuit,and functions of LCD indication, sound and light alarm together with battery low voltage alert function,It also chooses high-quality sensor and the imported gas pump with low temperature resistence,high sensitivity and anti-jamming property to make sure its direct test about the buried pipelines and leakage points；Moreover,the operator’s work efficiency is largely improved due to the alarming voice .
　　The product is widely used at Gas transport safty check points in Gas ,petrol ,petrolchemical areas and so on in cites and towns and plays an indispensable part in our country’s gas industry .