Features: This portable gas and carbon monoxide detector is designed for industrial use, providing accurate and reliable detection of combustible gases and toxic gases. With its quick response time and clear LCD screen, this detector allows users to easily monitor gas concentrations and alarm status in real time. Idealfor industrial maintenance professionals, homeowners using gas appliances, and firefighters, this detector helps ensure safety in workplaces, homes, and firefighting operations. Whether it's detecting gas leaks in factories, monitoring gas levels in residential areas, or ensuring safety in commercial facilities, this detector is a reliable tool for preventing accidents and protecting people. With its small size and easy to carry design, this detector can be used anytimes, anywhere. Its data recording function also allows users to track long term gas leak trends and carbon monoxide levels. Specifications: Material:Plastic Color:Black Size:Approx.127x65x23mm/5x2.55x0.9inch Battery: 3x1.5V AAA alkalinebattery (not included) Range: 0~1000ppm Resolution: 1ppm Basic error: 10% (relative error) Warm uptime: 30 seconds Response time: 60s Recovery time: 60s Zerodrift: 0-3PPM Sampling method: diffusealarm value Correction: two-point field correction Working voltage: 4.5VDC Working hours: > 14 hours Display: LCD backlights display Applicable temperature range: -10~ 50 Applicable humidity range: < 95%RH (no condensation) Package Includes: 1x Combustible Gas Detector note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.