A nurse call button is a device that helps a patient in a hospital or nursing home to ask for help from a nurse or other healthcare staff. Imagine you are staying in a hospital bed and you need something from the nurse like medicine, water, or help with getting to the bathroom. Instead of having to yell for help or get out of bed and find a nurse, you can press a button that is next to your bed. This sends a signal to the nurses' station, and a nurse will come to check on you and see what you need. So basically, it's a little button that helps you get help when you need it most!