UNIQUE DESIGN]: 5 Years Built-in carbon monoxide alarm with LED display, electrochemical sensor, high consistency and stability with beautiful outlook. Years: 5 Years Audible and Visual Warning: 85dB audible alarm beeps and red LED flashes when dangerous level CO gas is detected to provide instant warning signal effectively Standard Alarm LED Display: Warning time depends on monoxide concentration level carbon monoxide, and the carbon monoxide alarm display screen can accurately measure the concentration of carbon monoxide and its concentration data. The CO level is between 000 and 999 ppm. LB it displays for low battery and need to change battery, Err on LCD to indicate device, then talk with our services.

Note:Shipping time is 5-12 days