Features: Advanced metal gas sensory probe deliver detection of combustible gas, ensuring safety monitoring with rapid response and broad spectrum compatibility. Built with metal housing and cutting edged sensing technology, this detector offer stability in harsh environments while resisting for consistent. Ideal for industrial safety engineers, facility managers, and homeowners seeking robust protective against gas leaks in high risk areas. Critical for chemical plant, underground parking garages, laboratories, and manufacturing workshops requiring real time combustible gas detection. Seamless integration into existing security simplifies upgrades, providing cost effective gas monitoring without complex installation Specifications: Component:Metal Type:MQ-2/MQ-3/MQ-4/MQ-5/MQ-6/MQ-7/MQ-8/MQ-9/MQ135 Size:Approx.21mm/0.83inch Package Includes: 1Pc Gas sensory Probe note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual of the item.