4in1/5IN1 Carbon Monoxide Detectors Plug-in Natural Gas Detector&Carbon Monoxide
【Adjustable Gas Sensitivity】This detector provides a dual-sensitivity mode (S1/S2) for optimized gas detection. 【Loud Audible & Visual Alarm】When CO or combustible gas threats are detected, the unit triggers a dual alarm with bright flashing lights and an 85dB+ sound.