LifeFone Medical Alert Service - Our in-home system is designed to give you independence and safety in your home. It works without a landline using AT&T’s Cellular Network (it works with our cell phone service, not yours). In any kind of emergency, this 24/7 service Saves Lives When Seconds Count®. It has a signal range of up to 1,300 ft. from the base unit with an enhanced 32-hour backup battery if you lose power. Batteries for wristband, pendant and the base unit are silently monitored in our call center. The personal help pendant has a superior range, both for signal and voice communication. The base unit has a highly sensitive microphone, and the base unit’s volume can be adjusted to make it as loud as necessary, ideal for anyone who may be hard of hearing. For only $5 more per month you can add LifeFone’s Fall Detection pendant to your system.