carbon monoxide detector co alarm detector sensor battery operated with lcd digital display for house kitchen bedroom living room basement g

[high sensitive & quick responsive]enough to detect odorless invisible and deadly carbon monoxide in the air, quick reaction to save your life in the first time when fire hazard occurs. [safety and visible] with 3 digits lcd displayer is optional,'err' on the lcd to indicate the unit is malfunctioning. 'lb' on the lcs to indicate it low battery and need to replacement. [alarm warning]when a dangerous level of carbon monoxide is detected the red led will flashes and a loud alarm pattern will sound--loud 85 decibel alarm with led flash. easy installation and widely used [energy saving]3 * 1.5v aa battery powered, low current consumption, ultra-long standy time..syi