Model: AB-2520 Detect Mode: Large-scale bus intelligent alarm control panel > Can connect with 520 zones at most. It has 8 wired zones itself and can connect with 64 zone expanding modules by bus or WL-FX-8 control panel > The communication distance can be 2400m with double bus of 0.5mm2 twisted-pair > All the zones are distributed to 65 partitions at most for management. > Each keypad can control one or several partitions. Single partition or zone can be armed or disarmed separately by the main keypad. > Support 8 keypads which can be operated separately, including 1 main keypads and 7 auxiliary keypads. Any keypad can follow all the alarms and display the information by programming to the main keypad. > The name of the zone and device can be changed so that it is easy for users to find the place where alarm happens. > Many linkage functions including alarm, arming or disarming, abnormal, manual operation etc, 4096 ways at most to realize the electrical map, spot alarm and entrance or exit indication etc. > With 3 levels of passwords, management, programme and operation > With RS232 port itself to connect to PC directly > Support contact ID protocol, can inform the user by telephone. > Arm or disarm by keypad password, remote controller, PC and telephone. > All the keypads can be armed or disarmed by management password or remote controlling to the main keypad > Support spot controlling alarm output for the zone expanding module > Support printer to print the alarm information > Can programme to the control panel by software so that it is convenient for testing. > Can send the spot by remote programme and access the configuration information by PC directly > Can tailor-make the programme according to clients requirement and then send the programme to the user and the user can access the information by PC