Voice Dial Security System. Main Console emits notification alarm, begins dialing up to four pre-programmed numbers, plays a digital audio recorded message on connection and sends instructions to flash all X-10 PRO controlled lights on and off to attract attention. It also sends a signal to trigger the PSH01 & PSH02 PowerHorns (sold separately). The person answering the call can listen in by pressing "0" on their touch tone phone to help determine their course of action. Includes: Main Console 2 sensors for use with doors or windows 1 motion sensor 1 master remote 1 keychain remote 1 Lamp Module