The EcoTech EZ Interface Adapter is a 3rd party controller device recommended for use with the EcoTech EZ replacement variable speed motors for swimming pool pumps.  This interface adapter allows the motor to communicate with the 3rd party controller like a Jandy Aqualink or a Hayward ProLogic system.  All you need to do is set the four custom flows in the motor, wire the EcoTech EZ Interface Adapter up to the communication board and you are good to go!