The unit was delivered on time and well packaged. I connected it to the power grid. All 3 setting modes have to work immediately. At night I watched the unit from the outside. Even from a distance of 30 m, the lighting effects were still visible, I could see no short-term repetitions of the LED sequences. I have retained, because the price of the device, which is much higher than that of the predecessor devices one star. The installation of something like a random number generator is unlikely to justify the price increase. I can now only hope that a potential burglar shares my observation and the simulator does not recognize as such!