There are biomimetics, metal oxides, and electrochemical cored devices. These devices are so named due to the basic difference in the carbon monoxide sensor technology that has been used in them. Out of these three main types electrochemical devices have been known to give accurate results. Real time constant LCD screen displays and LED lights present on these detectors make it easy for the user to follow the records of the different levels of carbon monoxide in the house. He can accordingly tune down the use of probable carbon monoxide emitting appliances at home. These include air conditioners, propane water heaters, corn burners, wood burners, furnaces, and so on.