Combination and Carbon Monoxide Alarm Detector, Dual Sensor CO Detector Battery Powered with LCD Display Sound Warning for Home,School,Office

【Accurate ,Reliable,Highly Sensitive】 Equipped with both photoelectric and electrochemical CO sensors that work independently of each other,When carbon monoxide and rise to alarm levels, the alarm provides a clear, loud warning when it is disco, 【2 in 1 Detector/Carbon Monoxide Alarm】 very suitable for carbon monoxide gas leakage and fire place, Once the and carbon monoxide detector detects these two gases, they will beep., 【LCD Digital Displays】You can use the digital display to see the current CO concentration and the status of the machine's battery level.Suitable for all the Place Possible to Produce Carbon Monoxide and, Such as your Home Kitchen, Bedroom, Bath, 【Test Mode Button】Malfunction and low battery warnings allow you to easily know the working status of the alarm; Test button enables (silent mode)you to test the alarm weekly, When encountering a non-emergency situation（false alarms occur),you can im, 【Quick & Easy Installation】Battery operated device Can be easily installed and maintained without the need for an electrician,Easy to mount on any wall or ceiling with the included screws; You Can Hear the low power alarm When the Power is Close to R