Seco-Larm E-921CPQ Automatic Voice Dialer for Security Systems, Trigger-activated alarm and dialer with user-programmable 20-sec alarm message, 16-Digit large display with date/time and function icons 3 Triggers (1 N.C., 2 NO/NC) for multiple zone security; Call in at any time to listen in to room, broadcast to room, arm, and disarm dialer Listen in, broadcast messages to room, and/or disarm during dialer call out; Programmable PIN number and entry delay timing 5 Programmable emergency telephone numbers (up to 32 digits each); Programmable auto-dialing cycle repeat times Home mode function (acts as a door chime when user is at home), Panic button, Back-lit keypad Built-in flash memory to protect against system data loss in case of power failure, Touch-Tone dialing, Low-battery indicator for backup battery (battery not included)