https://pligg.samweber.biz/story.php?title=preserving-your-led-displays-in-extremely-cold-weather- If you cannot have them working 24/7, then you can keep the LED screen in stand-by mode at night time. With this, the screen will actually be alive, but will not display any image. From the outside, you cannot predict the difference between a turned-off screen and a stand-by screen, but this makes a huge difference from inside. Wed, 04 Jan 2017 04:57:47 UTC en