Buying a LED scrolling sign: size, build and what to check

When buying a LED scrolling sign, the first answer that can be backed with numbers is this: a good-quality outdoor single-line board is worth looking for from around EUR 250-460 net, a two-line one from around EUR 380-650 net, if you want brightness above 5,000 nits and IP65 protection - that combination is what keeps the board readable in sunlight and standing up to years of weather. Indoor single-colour boards are available from roughly EUR 80-150 net. All figures here are indicative net prices, excluding VAT. The important thing is to weigh the warranty, the service support and the power draw alongside the price, because over the long run those matter more than the initial purchase figure.

Before buying, settle five questions: where the board will go (indoors or outdoors), from what distance it will be read, how long and how many lines the typical message is, what colour you want it in, and how you intend to update the content. With precise answers to those, the sizing and the technology choice follow almost automatically - and these are exactly the five points a good supplier will walk through during a free site survey.

Start with the location: indoors or outdoors

The first and most important question is where the board is going. An outdoor LED scrolling sign is built waterproof (IP65 as a minimum), high-brightness (5,000-7,000 nits) and with a UV-resistant housing, so it survives years of weather and stays readable in sunlight. The indoor version is slimmer, dimmer and cheaper, but outdoors it will fail within months from moisture and temperature swings. Never skip this decision, because the build determines both the price and the service life. Even in a partly sheltered spot - under a canopy, for instance - the outdoor build is the safer choice, because humidity and temperature swings are present there too.

How big should the board be?

Size is determined by viewing distance and by the length of the text to be read. Rule of thumb: every centimetre of character height buys roughly 3-4 metres of legible distance, so a 10 cm high letter reads from about 30-40 metres. Height is best judged in pixel rows: 16 pixels gives one line of text, 32 pixels gives two. If you want to display a daily menu or a multi-line advertisement, choose a board at least 32 pixels high, otherwise the text will be too short on a single line. If you are unsure about size, a configurator or a site survey will calculate exactly what board fits the available surface and the planned viewing distance.

Pixel pitch and legibility

Pixel pitch is the distance between LED dots. Indoors, for close reading, P5 to P7.62 is ideal because it gives fine lettering. Outdoors, at greater distance, P10 is the established standard: it is cost-effective and stays sharp from afar. As an international rule of thumb, 1 mm of pitch calls for roughly 2.5-3 metres of comfortable minimum viewing distance. Do not automatically reach for the smallest pitch: if the board will be far away, the viewer will never see the extra density you paid a premium for, and it simply makes the purchase more expensive.

Single-colour, dual-colour or full-colour?

If you only display prices, opening hours or short news items, a single-colour board (red or amber) is perfect and the cheapest, and it has the lowest power draw too. A dual-colour red-and-green panel can also produce an orange shade, which is handy for emphasis. A full-colour RGB scrolling sign displays any colour and simple logos, but costs more; choose it when brand colours or attention-grabbing animation matter to the look. Note that even a full-colour scrolling sign is not the same as a full LED video wall: it still cannot play real video - that is what the LED video wall product category is for.

Control and connectivity

Check how content gets loaded. Wi-Fi or Bluetooth is the most convenient, because updates go wirelessly from a phone, even from home or the office. USB or SD-card solutions are cheaper, but the content has to be carried physically to the board. For larger networks and multi-site operations, look for a cloud system managed from a browser: that way you update every board from one place at once, which saves a serious amount of time.

Power supply and consumption

Check whether the board arrives with a built-in power supply, and what its maximum power draw is. Scrolling signs consume little, because only a fraction of the LEDs are lit at any moment - a typical outdoor two-line single-colour board averages around 80-150 W, which works out at roughly EUR 5-10 a month in electricity. It is still worth clarifying the power feed for large outdoor panels in advance, especially where it has to be connected to an outdoor socket or a weatherproof enclosure.

I will not be able to operate it - is it really that simple?

Many buyers worry that running a scrolling sign will be complicated, but today's apps are written explicitly for non-specialists: entering text, setting the font colour and adjusting the speed take a few taps on a phone. Serious suppliers also give a short, practical briefing at handover, and provide support if you do get stuck. Anyone who has used any smartphone app will pick up the operation of a scrolling sign confidently within half an hour.

Warranty, spare parts and installation

Buy from a reliable manufacturer offering at least a one-to-two-year warranty, where replacement modules or power supplies can be obtained from stock afterwards rather than only on order from abroad. For outdoor installation, secure mounting and correctly rated weatherproof cabling matter, because an under-specified support structure or power feed is a common source of faults. If you are unsure about the size or the build, ask for custom sizing and a free site survey, since the height and length of a scrolling sign can be assembled freely from modules to match your location.

Expert tip: ask for a sample or a reference

Before you decide, ask the supplier for photos or video of similar-sized boards already in service, ideally references identifiable by name and location. A reliable company is happy to show real, running projects and can tell you how long they have been operating without trouble. That reveals far more about quality than any product description, and it helps you avoid boards assembled from mixed production batches with uneven brightness.

Common mistakes when buying

The most frequent mistake is choosing too fine a pixel pitch for a location where the board is viewed from a distance - it inflates the cost without any perceptible gain in quality. Another typical error is an under-specified power supply or support structure, which leads to failures over time. Many buyers forget to ask whether the board is front-serviceable and repairable from the front, which is a decisive point once maintenance or a module swap comes around. It is also common not to ask for an itemised quote, only to discover on the final invoice that installation or the handover briefing was charged separately.

Will it use a lot of power, and are there hidden costs?

This is one of the most common worries, yet a scrolling sign is in fact among the most energy-efficient advertising devices around: an outdoor two-line single-colour board draws around 80-150 W on average, which even at 10-12 hours of operation a day means only about EUR 5-10 a month in electricity. The key to avoiding hidden costs is a transparent, itemised quote: always ask for the board, the support structure, the control system and the installation to be priced on separate lines, so you know exactly what the final invoice will hold.

Hire or buy?

If you are unsure whether the investment pays off in the long run, many suppliers also offer hire, letting you try a scrolling sign without risk before committing to a purchase. That is particularly useful for seasonal businesses or for the duration of a single event, when there is no need for continuous year-round operation. If you are planning regular, long-term use, experience suggests that above four to six occasions a year buying is the better value.

Who installs it, and how long does it take?

Fitting a smaller indoor scrolling sign typically takes half an hour to an hour, while installing a larger outdoor panel on a support structure can take from half a day to a full day, depending on the wall type and the complexity of the cabling. Installation should always be done by a professional, because secure mounting and a compliant electrical connection determine the safe, reliable operation of the board over the long term.

Do you need permission for an outdoor scrolling sign?

An outdoor scrolling sign facing a public street, mounted on a facade or shopfront, often requires consent from the local authority or a planning notification, in the same way as other illuminated advertising devices. It is worth clarifying this with your supplier while the sizing is still being decided, because local regulations may cap the size or the brightness, and any consent process needs to start early enough not to delay installation.

Which businesses suit a scrolling sign best?

For grocery stores, bakeries and butcher shops it is mainly about displaying daily offers and prices; for pharmacies showing out-of-hours information it is practically standard equipment; and for restaurants and cafes it is a practical way to put up the daily menu. In these cases a single- or dual-colour outdoor build is the most cost-effective choice, because the goal is simple, quickly readable text information rather than a branded, image-led presence.

Can custom sizes and shapes be ordered?

Yes. Most LED scrolling signs are modular, so the width and height of the board can generally be set freely in steps matching the module size, rather than being limited to pre-built fixed sizes. That means the board can be fitted to an unusually shaped facade or shopfront, provided the sizing is settled during the design phase together with a site survey. If you need a narrow or unusually long surface covered, flag it at the quotation stage so the supplier can give an accurate, custom price.