The AI-JP-8Z is a distribution adaptor for the JM Series. The adaptor is utilized when homerun wiring is desired. The AI-JP-4MED master station and each JP-4HD sub master station will connect to this adaptor using CAT5e/CAT-6 cable. The JP-8Z can surface mount using the mounting holes or with the W-DIN11 mounting rail. One or two PS-2420UL power supplies are used, depending on how many sub master stations are connected.