The long, flexible stainless steel probe allows you to reach more surface area. Sound and light alarm against combustible gas leaks. With indication of the degree of leak gas and low battery indication. Adjustable sensitivity, adapts different detection requirements. Compact size, light weight, easy to carry and use. < p>Number of parts delivered: 1 Specification: Brand: SMART SENSOR Model: AS8800L Sensor: semiconductor Detection gas: methane, ethane, propane, butane, alcohol hydrogen gas, natural gas, acetone, naphtha, sulfide, gasoline and volatile industrial solvent Sensitivity: adjustable, minimum 50 ppm (methane) Response time: Instant Preheating time: lt; 20s Continuous operating time: 9 hours (varies slightly with working conditions) Low battery indication: yes Power supply: 3 x 1.5V AA batteries (NOT included) Product size: 156 66 31mm / 6.1 2.6 1.2in Operating environment: 0 ~ 50 , 0 ~ 80% RH Storage environment: 10 ~ 60. 0 ~ 90% RH Weight: approx. 221g / 7.8oz luckymeet