This product is a carbon monoxide gas detector and uses a carbon monoxide electrochemical sensor to ensure stable and constant performance. When concentration of the leaked carbon monoxide reaches the given alarm level the detector LED flashes red and buzzer gives out alarm sounds. Besides suitable for early warning and protection of carbon monoxide leakages in houses villas factories shopping malls warehouses office buildings or other indoor places. This unit has a subtle shockproof design which makes it also suitable for vehicle use.