Specifications Model CM51Input Power Supply AC 110V 240VInterface AC PlugMaterial ABS PlasticDetection Scope Carbon Monoxide below 1000ppm Formaldehyde HCHO 0 05mg m³ TVOC GasDisplay Features Adjustable brightness 5 levels Additional Features Temperature and humidity measurementFeatures 1 Accurate Air Quality MonitoringEquipped to measure carbon monoxide CO levels up to 1000ppm and formaldehyde HCHO with precision ensuring a healthy living environment 2 Multi Functional Environmental TrackingProvides comprehensive data on temperature humidity and TVOC levels making it ideal for diverse indoor settings 3 User Friendly Brightness AdjustmentIncludes 5 adjustable screen brightness settings catering to various lighting preferences for optimal readability 4 Real Time Alert SystemEffortless activation of alarm alerts with sound notification enhancing safety during critical CO or gas levels 5 Compact and Easy InstallationLightweight and portable design with an AC plug interface ensuring seamless integration into homes or offices Package Included 1 x Indoor Carbon Monoxide and Formaldehyde Instruments