Panic Switch Call Button (Nurse Call for Medical Facilities)Panic Switch Call Button (Nurse Call for Medical Facilities) Ideal for any situation, the Panic Switch Call Button is a hand held, mechanical Call Button, designed for use in medical facilities such as Hospitals, Assisted Living and Nursing Homes to alert the staff to emergency situations with residents. They are also designed for use in residential bedrooms, baths, workrooms and other areas where some type of annunciation may be required,