If your parent lives alone, an emergency alert system -- often in the form of a pendant or bracelet -- will give everyone peace of mind. Available from many different service providers, an emergency alert system enables your parent to immediately contact a monitoring service in an emergency. Some systems offer two-way voice communication; others use a transmitter to send a prerecorded message. A call button on a pendant offers stroke survivors easy access. To find the right emergency alert system for your parent, search online using keywords such as medical emergency alert.