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Six Guides For People Who Specify Sign Lighting
How the published depth band decides whether a face lights evenly, what IP67 and IP68 actually cover and what neither of them does, why every product carries a cascade limit and what happens past it, when a light box has to be lit from the edge instead of the back, what COB construction changes in a cove reflection, and which certification document answers which question at which border. Every figure quoted comes from a specification published on this site, and where a figure does not exist the guide says so.
How to Choose an LED Sign Module by the Depth of the Sign
The published depth band is the one figure that decides whether a face lights evenly. Here is what the band means, why it exists, and the full depth map across all twenty-five products on this site.
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IP67 and IP68 on Sign Modules, and What Neither of Them Covers
Both ratings appear across this range, on specific models rather than on 'the range'. Here is the difference, and the part of the installation that no module rating protects.
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Cascade Limits and Voltage Drop in LED Module Runs
Why every product page publishes a maximum number of modules per feed, what happens past it, and how the single-ended and double-ended figures differ.
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Side-Emitting or Backlit: Lighting a Shallow Light Box
When the face has to stay unbroken and the box is too shallow to backlight, the module moves to the edge. What changes when it does.
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COB Strip or Discrete LED Strip for a Cove
640 emitters per metre under one phosphor line against 60 or 120 discrete packages. What that changes in a reflection, and what it costs.
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Certification Documents for LED Sign Modules, and When You Need Them
CE, RoHS, LVD, an IP68 test report and UL. Which document answers which question, and why they are sent per shipment rather than posted.
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