This unit plugs into your existing phone line and works as a speakerphone. It comes with the basic pendant. When your pendant button is pushed, our 24-hour support center will communicate with you to get you the help you need. The base also includes a “HELP” button which can be used to call for help. The unit includes the base station, 1 telephone cord, 1 power adapter, 1 pendant on lanyard. The MyActive Fall detection unit is optional.