[WiFi Wireless Call Button for Elderly at Home, Real-time App Notification]: No additional receiver is required, no monthly fee needed, just connect this caregiver call button to your home Wi-Fi network in a few simple steps. You can pair your mobile phone with the caregiver call button. When an elderly or patient person needs help, they can simply press the SOS caregiver pager and you will immediately receive an app notification on your mobile phone, no matter where you are. NOTE: THE ALERT BUTTON FOR SENIORS AT HOME ONLY SUPPORTS 2.4G WIFI, NOT 5G WIFI. [Portable Call Bell for Elderly at Home, Easy to Use]: Double-sided tape and lanyard are included in the package; this is a alert button for seniors at home that can be hanged around the neck with a lanyard or pasted on the wall with double-sided tape, making it easy to use. You will be notified via your cell phone when someone presses the button. --NOTE: IF YOU WISH TO RECEIVE SMS AND EMAIL NOTIFICATIONS, YOU WILL NEED TO PURCHASE A SUBSCRIPTION!!! [Multiple People Sharing]: Share with more family members through the sharing function in the App. After pressing the caregiver pagers for the elderly, the person you shared with can also receive alarm messages, allowing multiple family members to participate. [Versatile Applications]: This emergency button for the elderly can be used at home, in nursing homes, hospitals, clinics, and more. Please keep the host close to the WiFi signal source for stable reception. [Gift for the elderly]: This elderly monitoring system is an elderly assistance product, suitable for the elderly and others who need extra care. It gives the sick or elderly some privacy and independence, while providing peace of mind for their family members.