It is mostly used to detect wheezing symptoms caused by respiratory diseases in children. When children suffer from respiratory diseases such as bronchitis, bronchitis, asthma and other diseases, wheezing symptoms often occur when the condition worsens or attacks, but because children are young, most It is not able to express discomfort well, or ignore these discomfort symptoms, leading to delayed treatment. This product is designed for children with such diseases. It is worn on the chest to detect the breathing status of children in real time. Through the back detection patch, the child's breathing condition is detected, the abnormal breathing rate is detected, the signal light flashes, and a message is sent to the parents via Bluetooth, so as to confirm the child's status in time.