3-Pack Carbon Monoxide Detector,Mini CO Alarm Battery Powered with Digital LCD Display,Test-Silence Button,Portable Carbon Monoxide Alarm with LED Lights for Home, Travel Mr. Pen Easy to Clean】：Use a hair

Easy to Clean】：Use a hair dryer or soft makeup brush to gently clean dust from the filter surface

whether you're a hobbyist or a seasoned professional

The plug-in design guarantees uninterrupted operation for long-term radon tracking

It features corrosion-resistant and rust-proof surfaces

3-Pack Carbon Monoxide Detector,Mini CO Alarm Battery Powered with Digital LCD Display,Test-Silence Button,Portable Carbon Monoxide Alarm with LED Lights for Home, Travel Mr. Pen Easy to Clean】：Use a hairAbout this item Carbon monoxide detectors adopt high performance electrochemical CO sensor, provides a highly sensitive detection for your home. This CO detector is a mini size, not large Our carbon monoxide detector has a digital LCD display that you can read in real time. It includes CO density and power display. The LCD won't stay on all the time when it's working This CO detector has three LED indicators, green is power indicator, it flashes once