Pentair 521109 IntelliCom 2 Interface Adapter Replacement High Performance Pump IntelliCom 2-interface adapter replacement Rated 9-30 V DC with 4 inputs; compact and affordable Easy installation requires 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 Measures 6-inch length by 3-inch height by 3-inch width