2. Sensor types: There are two types: carbon monoxide sensor electrochemical sensor and semiconductor sensors. Electrochemical sensors, high accuracy, good stability, and hence the price is relatively high. The low power consumption of the electrochemical sensor alarm can be made use of battery-powered. The semiconductor sensor power consumption is higher, usually do not have a battery-powered. 3. The distinction of applications: can be divided into two kinds of industrial and household carbon monoxide alarm. Industrial carbon monoxide alarm is expensive, requires very high accuracy, temperature and zero drift to be small, and some special occasions often need to use explosion-proof enclosure. Industrial electrochemical sensor carbon monoxide alarm. Home with a carbon monoxide alarm is mainly used for ordinary families, small entertainment venues and small factories, and small chemical laboratories, the appearance of relatively small, relatively low prices. A few years ago, whether industrial or household use carbon monoxide alarms are mainly dependent on imports, beginning in 2007, our homegrown carbon monoxide alarm began to multiply. For your safety, all in Shandong Xiang Electronic Technology Development Co., Ltd. www.qitibaojing.net.cn