Refer to “NXG-8(E) Wiring Diagram” on 
page 17. The NXG-4 unit functionality is the 
same as NXG-8 except that the connections 
are spatially orientated differently. 
NXG-4 Terminals 
Refer to “NXG-8(E) Terminals” on page 19. 
The NXG-4 unit functionality is the same as NXG-8 except it provides two 
additional connections: 
•  Antenna 1: After the board is installed in the metal enclosure, insert the 
antenna with the corresponding icon.  
•  Antenna 2: After the board is installed in the metal enclosure, insert the 
antenna with the corresponding icon.  
NXG-4 LEDs 
Refer to “NXG-8(E) LEDs” on page 20.  
The NXG-4 unit functionality is the same as NXG-8 except it has the following 
additional LED:  
•  D5 RF: Red LED blinks when message is sent or received from a 63bit / 
80plus transmitter.