Features:Long flexible stainless steel probe helps you reach more area.Sound and light alarm against combustible gas leakage.With gas leakage degree indication and low battery indication.Adjustable sensitivity, adapts different detection requirements.Compact size, light weight, easy to carry and operate.Specification:: SMART SENSORModel: AS8800L Sensor: SemiconductorDetection gas: Methane, Ethane, Propane, Butane, Alcohol Hydrogen Gas, Natural Gas, Acetone , Naphtha, Sulfide, Gasoline and Volatile Industrial SolventSensitivity: Adjustable, Minimum 50PPM (methane) Response time: InstantaneousWarm-up time: <20sContinuous operation time: 9 hours(slightly vary with working condition) Low battery indication: YesPower supply: 3 * 1.5V AA batteries (NOT included)Product size: 156*66*31mm / 6.1*2.6*1.2inOperating environment: 0~50, 0~80%RH Storage environment: 10~60, 0~90% RHWeight: Approx. 221g / 7.8oz Package list:1 * Flammable Gas DetectorNote:1. Due to the difference between monitors and light effects, the pictures may not reflect the actual color of the item.2. Please allow slight error due to manual measurement. Thanks for your understanding.