Combination smoke&carbon monoxide alarm YJ-903

This product is a battery operated carbon monoxide detector used for detecting poisonous gas--carbon monoxide.The product uses high stability electrochemical sensor and high quality chip to make sure it can detects carbon monoxide in time.Once circumstances yield carbon monoxide and reach the detector's alarm and LED indication to warn you that you need to take action to avoid breathing carbon monoxide.The detector is widely used in indoor places where it releases carbon monoxide.