It has terminals for 4 hardwired zones and it can be doubled by adding 4 more zones for a total of 8.

The NX-4 is the smallest of the four panels. But also each panel can be expanded to a different total maximum number of zones. Each panel comes with a different number of zones on the main board. The first and usually most important difference is the number of zones. There are just a couple key areas that will help the average person pick between the different models. They all use the same programming process, the same wiring structure, et cetera. Each one has the same basic features pretty much. There are four models of NetworX alarm panels: NX-4, NX-6, NX-8, and NX-8E. This makes the NetworX line highly customizable and extremely flexible to fit perfectly just about any installation. But the panels are modular which allows you to add whatever keypads and other modules that you need to meet the requirements that you have, including adding wireless capability. This means that in its base configuration out of the box it is a hardwired system. NetworX is a hardwired hybrid system, very similar to the Honeywell Vista and DSC PowerSeries. The NetworX line of alarm systems has survived multiple business purchases to make it to today where it is owned and manufactured by Interlogix. Total Connect 2.0 Package Monitoring Add-Ons.Central Station Alarm Monitoring Services.

Networx alarm says service light