Methane carbon monoxide tester

A methane carbon monoxide tester relates to the technical field of gas testing devices and is composed of a single-chip microcomputer control module, a buzzer alarm module, a digital tube display module, a key setting module and a battery charging circuit. The output end of the single-chip microcomputer control module is respectively connected with the input ends of the buzzer alarm module and the digital tube display module, and the output ends of the key setting module and the battery charging circuit are connected with the input end of the single-chip microcomputer control module. The methane carbon monoxide tester is characterized in that the output end of the single-chip microcomputer control module is further connected with the output ends of a carbon monoxide gas measuring module and a methane gas measuring module. A high-performance micro-controller and an intelligent, multifunctional, subminiature and digital tester are adopted, and the methane carbon monoxide tester has the advantages of being small