Exemplary embodiments of the present disclosure are directed to a lighting system that includes a line control module and light modules. The line control module can be configured to interrupt power to the light modules according to one or more power interruption schemes to control an operation of the light modules. The line control module can have user interface circuitry including a rotary encoder with a shaft and a push button, a preview circuit, and indicator light emitting diodes. A user can interact with the lighting system via the user interface circuitry, which can be configured to provide visual feedback of various settings of the lighting system.