Uses Normal Phone Line, with Optional Bluetooth Adapter (sold separately) Can also use Cell Phone (requires Optional Adapter). The ATS HELP DIALER 700 Emergency Alert Dialer with 2 Panic Buttons. Instantly calls up to 3 phone numbers and plays your personalized emergency message. Outgoing message length of 7 seconds is all you need to briefly say "This is John, Please send Help”. Your caller Id will tell people who you are also. 911 will have your address. The best way to keep your independence and get HELP if needed. Just Press the panic button and help is called. When a call is received the receiver simply presses any button on their phone and opens the full 2-way communication through the built in speakerphone from several rooms away. 2 Panic Buttons Included: Necklace Panic Button and Wrist Panic Button. Pacemaker Safe - 100 Foot Range. Water Resistant Wrist Panic Button (You can shower and bathe with it). Never pay a monitoring fee! No Monthly Fees! Simple - Easy - Affordable. ----- How does it work? Using a home phone line, when the panic button is pressed the system dials the first number that is programmed into it. The system then waits to 'hear' any key pressed on the other end of the line. This tells the system that a human answered the call. If the systems hears a key pressed it will stop calling numbers and turn on the speakerphone. If the system does not hear a key pressed it will hang up and call the next number in sequence. We suggest that you have 911 programmed as the 3rd number to ensure that someone is contacted in the event of an emergency (this is totally optional). Note: This system works with most Cable/Internet/VOIP systems and normal phone lines. Note: When recording your message place the microphone close to your mouth for clear recording. Uses Normal Phone Line, with Optional Bluetooth Adapter (sold separately) Can also use Cell Phone (requires Optional Adapter)