Pentair IntelliCom II Interface Adapter Replacement For High Performance Pump P/N: 521109 The new IntelliComm II Interface Adapter provides automatic control of IntelliPro and IntelliFlo variable speed and flow pumps with Pentair Compool systems as well as Jandy and Hayward automation controllers. Features: * Easy installation low voltage protocol adapter works with Compool and other control systems and draws power from the existing RS-485 communication line * Allows control of four individual speeds or flows controlled by the Automation control system * Can also be used to further expand the number of IntelliFlo pumps being controlled by EasyTouch (current limit is 2) and IntelliTouch (current limit is 8) automation control systems * Compact and affordable