The IS-Unity-DP card is suitable for the NXC Series UPS.  It does not support GXT3, this UPS model still uses the IS-WEBCARD

The Unity card replaces only IS-WEBL, IS-485L and IS-IPBML cards.

The Unity-DP card (Dual Protocol) allow customer to select two (2) simultaneous communication protocols SNMP & modbus, or SNMP & BACnet, or Modbus & BACnet.

For relay contact you still need to order an IS-Relay card.

A pdf of the manual is shown to the left.