Carbon Monoxide Detector, 10-Year Life Carbon Monoxide Alarm, Replaceable Battery CO Detector with LCD Digital Display and Test Button, 3 LED Lights CO Alarm for Home, GS828C-D, 4 Pack

10-YEAR OF CONTINUOUS PROTECTION - This CO alarm detector powered by 2 replaceable AA alkaline battery, 10-years product Life provide continuous protection. In addition, Test/Silence button enables you to test the alarm weekly.
CLEAR LCD DISPLAY & INTUITIVE LED INDICATOR - This CO detectors can clearly display the real-time concentration of carbon monoxide (CO) in the ambient air. Besides, 3 LED indicator flashes red, green, or yellow to indicate an alarm, power, or a fault.
EASY TO INSTALL - Keep your family safe with this easy-to-use 10 years carbon monoxide detectors. Portable and novel design approach allows it to be wall-mounted or freestanding, can be installed in every place in your house to protect your family from CO monoxide.
RELIABLE AND HIGHLY ACCURACY ALARM - This carbon monoxide detector alarm features an upgraded electrochemical carbon monoxide sensor, which provides high accuracy alarm. An early warning will be delivered by a loud alarm at 85 decibels.
GARB AND GO - The carbon monoxide detector is compact in size, measuring is 4.1 * 3.4 * 1.7 inches and weighing is 7 ounces, so it doesn't take up much space in your backpack or suitcase. Take it with you when traveling and it will protect you safe.