The Lobster Phenom and Lobster Elite iPhone Remote Control Assembly consists of a factory installed Wi-Fi Receiver and the available free iPhone Remote Control App available for download on iTunes. This proprietary system allows you to use your iPhone or iTouch device as the Remote Controller for complete operation of your Lobster Elite Grand Series or Club Series tennis ball machine. Call us at 800-247-3907 to obtain the required Return Authorization to have your machine sent in for this factory installed upgrade. This iPhone Remote is only compatible with EL04-EL05LE, Phenom and Phenom 2 models.