If you have a hardwired security system set up in your home, you can easily connect it to your telephone line to program it to contact you immediately upon a breach, when the kids get home from school, or when any event is triggered. The 4-Number Automatic Voice Dialer will dial any four telephone numbers, including cellular phones and pagers, when one of two events occurs. Since it has two inputs, you can record two different voice messages. The 4-Number Automatic Voice Dialer requires 12V power, which it can receive from a connected hardwired security system, a 12-volt power adapter or a 9-volt battery, which will also provide backup power.Auto-Dialer Details The 4-Number Automatic Voice Dialer will redial an unanswered phone number up to 10 times. Each message of up to 16 seconds will be repeated twice in order to ensure that the full message is received, in case the number goes to a voice mailbox or answering machine. Additional features include EEPROM memory that keeps programmed data if power is lost.