High sensitive;Ergonomic mold for nice handheld touching, single hand operation;Audible and visual alarm 1.Product Name:Combustible Gas Detector(8800A+)High sensitive Ergonomic mold for nice handheld touching, single hand operation Audible and visual alarm Sensor performs self detection during startup 3.7V 650mAH Li cell employed, recharging anywhere 2.Specification:Detectionnatural gas, LPG, ...