1. 9 defense zones, two wire connection (zone 1 to 7: regular zones, zone 8: 24 hours zone, zone 9: interior zone) 2. 14 alarm reporting phone numbers, auto dial Monitor Center Station numbers and the user numbers when alarming 3. Line sensing: auto dial even if the line is busy or cut 4. 12 seconds voice message, auto play when alarming 5. Arm/Disarm from a remote telephone, real time listen in 6. Away arming and Part arming 7. Identify specific zone when alarming by zone indicating light 8. Entry and Exit delay timer and the sounder cut off time adjustable 9. Alarm when power fails 10. Medical treatment and house keeping numbers could be set 11.Built-in rechargeable battery provides backup for 24 hours when power fails.