This is the Baby Smile Baby Alarm E-201. I gave birth last year and, being a worrier, I bought this in August 2024. However, it didn't suit my child (who has always been a restless sleeper since birth, and has grown into a baby who only sleeps when held). My baby is now a healthy 8 months old, but still won't sleep in the bed, so this item is no longer needed and I'm putting it up for sale. I only used it once or twice. There are no problems with its operation. This model seems to be discontinued, but if you'd like to try it out, please do (o^^o)