Day Control is the plug-in timer that gives a NovoLux LED bar a proper sunrise and sunset instead of switching hard on and off. You set the time the sunrise starts and the time the sunset starts, and a ramp duration for each between 5 and 60 minutes; the light holds full output in between.
It wires inline, and it is NovoLux only. The two plugs go between the mains and the NovoLux lamp — nothing to mount in the tank. Juwel's manual restricts it to genuine NovoLux LED units, so it will not control a HeliaLux bar or a MultiLux unit.
No app, no phone, one channel. This is a physical controller with dials, not a smart device, and NovoLux is a single white channel so there is no colour control and no moonlight. If you want app control and colour mixing you are looking at HeliaLux Spectrum and AppControl instead.
Juwel does not publish whether one Day Control can drive more than one NovoLux bar, so we cannot promise that.
The rest of the range is in our Juwel collection.