A control device for power delivered to electrical loads in a load control system via respective load control devices may comprise a programming user interface for programming the operation of the load control system. The control device may be configured to select one or more load control devices in response to successive actuations of a programming button of the programming interface. The control device may be configured to controllably illuminate visual indicators of the programming interface to indicate which of the load control devices is selected in response to successive actuations of the programming button. The control device may transmit programming information to the load control devices. The programming information may determine which of the load control devices are responsive to a digital message transmitted on the digital communication link.