Reefkoi added an option of a new controller with wireless remote control to the EvoSlim light. The new option will only add another $30 to the price of the light and gives you the ability to create a custom light cycle along with being able to change your lights via the remote at any time. You can program five different lighting events per 24 hour cycle to dial in that dusk-to-dawn cycle. Plus the remote allows you to showcase your lights and tank by either powering on or off, programming your cycle and adjusting your lights in 10% power increments. The controller is not backwards compatible with the older EvoSlim lights but is available for the lights they carry right now.