The GW-BAC1 is an external, high performance Building Automation multi-protocol gateway that has been preprogrammed for enabling Unitronics products (hereafter called “device”) to various building automation protocols. These protocols include BACnet®1MS/TP and BACnet/IP2. Configuration for the various protocols is done via Unitronics configuration tool UniBACnet Configurator. Each GW-BAC1 has a unique serial number located on the underside of the unit. This number should be recorded, as it may be required for technical support.