JM-LS858-11-A domestic combustible gas detector meets nationalstandard: GB 15322.2-2019This product is a high stability carbon monoxide gas alarm , used todetect the leakage of carbon monoxide (chemical formula CO) gas。We choose Combustion battery type carbon monoxide sensor , which hasthe characteristics of high stability and small sensitivity drift。The product adopts backlight digital LCD to display alarm concentration.When the alarm detects a carbon monoxide gas leak and it reaches thealarm settingconcentration,the red LED flashes and alarm。This product isused in the places where carbon monoxide gas may be produced。