Here are the fine prints:

Tap once for preset.
Tap twice for full-on.
Touch & hold to raise lights.
Push [button] to make current level the new preset.
Tap once for slow fade off.
Tap twice for fast fade off.
Touch and hold to dim lights.

This is NOT a joke. It's the real instruction.
Would anyone remember all these instructions?
You may say, Well, that's why they print it on the switch itself!
Well, who can read those instructions for how to turn on the lights before turning on the lights???
Bring a solar power torch.

Make life simple.

Link