Key Features Origin:CN(Origin) DIY Supplies:ELECTRICAL Certification:NONE Gas Type:CO2 With LCD Screen Or Not:YesWhat?s in the box1X 4 in 1 Gas Meter Oxygen Hydrogen Sulfide Carbon Monoxide Combustible Gas Leak Detector Multi Gas Detector for O2 H2S COSpecificationsSKU: GE779IP26D5EMNAFAMZModel: ACDqitifenxiyi894Production Country: ChinaSize (L x W x H cm): 10*10*10Weight (kg): 0.3Main Material: PVC