About the ZRS Modules
The ZRS RS-232 Serial Interface module adds a serial port to the NCD line of products. Most existing NCD devices with a pluggable
interface module may now be converted to a standard RS-232 serial interface simply by changing the communications module. The ZRS
is offered with 3 different RS-232 connection options depending on the wiring option that best suits your application. The ZRS module is powered
from the serial port of your computer. This module replaces any ProXR or ProXR Lite board's module even if you have a different module installed.