Fangrui Product Details [elderly Call Button]this No-monthly-fee Elderly Life Alarm System Comes With 1 Care Pager And 2 Wireless Call Buttons. The Care Pager Is Suitable For Anyone Who Needs Help, Such As The Elderly, Disabled, Patients, And Pregnant Women. [multi-function Receiver]this Care Pager Wireless Call Button Has 16 Built-in Ringtones And 3 Volume Levels To Choose From, From 0 Db To 110 Db. It Also Has Vibration, One-key Mute, And Low-battery Reminder Functions, Making It More Practical And Convenient In Specific Usage Scenarios. [portable And Convenient]the Receiver Can Be Moved With The Caregiver To The Bedroom, Kitchen, Bathroom, Or Yard. It Supports An Operating Range Of 328 Feet (100 Meters) In An Open Area To Ensure That You Will Not Miss Any Distress Signals. [two Calling Methods]there Are Two Ways To Call For Help: The First Is Pager + Button: After Pressing The Button, The Pager Will Receive The Button Signal, Display The Button Number, And Make A Ringtone And Vibration. The Second Is A Pager, Which Has Its O