The Fluval Digital Lamp Timer lets you control sunrise, mid-day and dusk settings. This can be used for up to two LED strip lights, and will simulate natural sun and moon cycles for a truly realistic environment.
This is designed to be used with both freshwater and saltwater aquariums, and gives you completely flexibility in the setting of your "day" light settings. You can control up to 2 LED lamps simultaneously (2 x 12V, 2 x 24V, or 1 x 12V / 1 x 24V). There is a basic function of On/Off, as well as progressive dimming options.
This is compatible with all LEDs featuring a standard 2.1 mm x 5.5 mm DC plug connection, and the maximum power per channel is 36 W at 12V and 60 W at 24V