How to Install a Scrolling Poster in a MUPI Light Box: A Buyer's Guide 2026-11-09
A MUPI scrolling light box runs up to six posters on two rollers. To fit a new roll: isolate power, wind off the old roll with the LCD controller, splice posters with tape or a zipper, align the top edge to the roller mark, then power up so the controller measures the roll. Keep rollers parallel within 1 mm and leave 290 mm of leader at each end. Adhaiwell's China factory test-runs each unit for 24 hours.