I have a led security light with a pir sensor, and the knobs? which are used to adjust time , sensor and lux are a bit confusing as to which end is the setting end.
The 3 knobs are all the same shape, and when you look at them or just one from the side view, it is tapered and has a small dimple in the high end. All 3 knobs turn through 360 degrees, as it is a bit like guesswork at the moment, but I'd prefer to take the guess work out of it when setting the light up correctly.
Any ideas anyone?