ComAp Inteligen NT
A typical IoT gateway plus annunciator setup for the ComAp Inteligen NT is illustrated in the following schematic.

Annunciator to RS232
BMS* Integration
A typical annunciator with a BMS integration is illustrated in the following schematic.

Annunciator with BMS Integration Using Modbus RTU-RS232
*Industrial Connectivity IoT API would be available for BMS integration.