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.