Bought two of these sets.  You are able to program them for steady on.  One set stayed programmed so every time I turned it on it was on steady.  The other set would not stay programmed and the settings are horrible with bright flashing that you think the police are outside your house.  Every evening when I turned them on I had to climb a ladder and reprogram them for steady on.  If you hang them in a window, the control box is next to the end of the lights instead of near the plug, so to re-program it you will need to climb on something to get to the controls.  Bad design, would not repurchase.