... of leak gas concentration, easier for use, set range by manual is allowed. 5)Default or self-set alarm limit. 6 ... PC, and work with specialized software to master the detector’s detection path.3. ParametersDisplay: 4.3 inch full color touch ... , water-proof and dust-proof filter, cup probe, carrying case, User’s Manual in Chinese/EnglishOptional Accessories:Trolley probe, borehole probe