The Custom Quest Stoplight alarm clock makes going to bed can be easy for you and your child. This time clock for kids tells them to stay in bed when the light is red. When the light is green, they can go. This kids alarm clock can also be used as a sleep machine and will help sleep and nap training. Can help your kid focus on the task at hand. On red- your kid will know to focus on the task. Once the time is up, a green light will signal your child to move on to the next task. Effective for disciplinary tools such as time-outs as well. this desk clock also has a night light function, just press the light button and the yellow light will come one. This will help your kid go to sleep easier with a night light presence if the red light/green light alarm setting is not on, or can even help along with the alarm setting. It is a loud alarm clock so there is an option for the buzzer or not. the box includes an AC adapter