New parents often wonder when they should change the diaper for baby? It is wasteful for change too early and afraid of getting a diaper rash for change too late. Opro9 SmartDiaper can assist parents to solve this problem! The Opro9 SmartDiaper detect through the temperature and humidity, the patent of algorithm gets the best time to change the diaper, and connect with the application to instantly send a message to the parent’s mobile device. Maximize the use of diapers without causing the baby’s delicate skin. Also, parents can record the time of the baby’s urine and diaper change, and then learn the regularity of the baby’s urine and do the potty training.