7Pin Signal Description1 TX+ Sends data over the FE.2 TX-3 RX+ Receives data over the FE.6 RX-4, 5, 7, and 8 Not defined NoneTable 6 – FE Port Pin DefinitionsPin Signal Description1 TX+ Sends data over RS485.2 TX-4 RX+ Receives data over RS485.5 RX-3 RX232 Receives data over RS232.7 TX232 Sends data over RS232.6 PGND Connects to the ground.8 Not defined NoneTable 7 – RS485/RS232 Port Pin Definitions2.5 DCU – User Interface ModuleDescriptionEquipped with the I/O module (DCU), the controller supports configurable digital inputs, alarm dry-contacts andsite sensor ports for environment management and alarms reporting. The DCU user interface module providesthe ability to add multiple sensors for: ambient temperature, humidity, water, door status, smoke and batterytemperature. The dry contact alarms are configurable and can be customized upon the DC system’s requirements.All alarms can be easily configured and monitored remotely through the WebUI (Web User Interface).Figure 10 – DCU Panel