Uses telephone line. No Monthly Fee Medical Alert System. MEDICAL ALERT SYSTEM: Simple 1 button panic button - no fumbling to press the correct button - tactile button - easy to feel even in the dark. In the event of an emergency, press the button on the base unit or the button on the wireless remote control pendant. The unit will auto-dial your emergency contacts. SOCIAL SAFETY ALARM FEATURES: What is a Medical Alert with Social Safety Monitor? Simply set an alarm in the unit to go off at a certain time each day. This feature is totally optional and does not have to be set. You control if this feature is on or off. If the user does not respond to the alarm within 30 minutes this unit will begin to call the emergency contacts and notify them there may be a problem. This will call and alert the people on the call list that the person being monitored has not turned off their alarm. This could indicate that there is a situation with the monitored person and assistance is needed. This is the perfect feature to ensure that someone is active each and every day. There is no reason for a senior to have fallen in their home and no one know about it for days. This system resolves that situation.

For additional pendants: Extra Wrist/Neck Panic Button for PAVD/Social Safety Monitor - SOS Pendant Alert | eBay