Function:
  1. 6 groups alarm telephone numbers programmable
  2.Control & operate the Mechanical Valve from Main    Control Panel
  3. Personal message record
  4. Telephone line anti-cutting function
  5. Password protection
  6. Time delay to arm/alarm
  7.Arm/disarm each zone separately
  8.Gas detector is available for 24 hours whenever arm/disarm
  9. Pulse or tone dialing setting