Smart Caregiver's 433-NC Wireless Nurse Call Button is used for residents to call for help. Designed to work with the Smart Caregiver Wireless Central Monitor Unit (433-CMU), Wireless Monitor (433-EC), or Wireless Caregiver Pager (TL-2020P). The button is easily worn around a neck by a supplied dark blue lanyard or comes with an optional white cradle for mounting to a headboard, wall, etc. Large green printed front graphics tell the resident to "PUSH FOR HELP" and a bell graphic shows where to push. Purchase multiple buttons for more than one resident or location throughout the facility or home. Each button comes with a 12 volt battery!