Replacement: Designed for universal replacement of nurses' stations and medical alert systems, also can be used for emergency alerts for patient assistance systems. Applicable People: The emergency call pager cable has a red call button and is ideal for caregivers, patients, elderly, disabled, and sick people. With Clip: This nurse call button cable is designed with a clip that can be attached to bed sheets or clothing for more convenient use. USB Interface: Standard USB mono plug connects to call speaker, no power or battery required. It is easy to use in a dark room. Safe And Flexible Use: Nurse call push button cord has sculpted handle, waterproof design, and 9.8ft cord length for more flexible use.