Portable Combustible Gas Detector Advanced Low-power microprocessor Sensitivity, zero adjustable CA-2100H Portable Combustible Gas Detector FeaturesIt adopted advanced Low-power microprocessorSensitivity, zero adjustableFull-function self-test and self-repairBattery voltage TipsThe alarm point can be set among 1%-50%Zero automatic adjust function, quick and convenientIntrinsically safe apparatus ...