Brightness, Pixel Pitch, and Weather Ratings: Reading an Outdoor Sign Spec Sheet

A sign that looks great in a showroom can disappoint in direct sun or heavy rain. Specification sheets hold the answers, but only if you know what the numbers mean. This article explains the terms you will meet when shopping for a full-color display outdoors. It is general information, so confirm all specifications with your supplier.

Brightness in Nits

Brightness is measured in nits. Daytime outdoor displays need much higher brightness than indoor ones to remain readable in sunlight. Many modern signs also adjust output automatically at night so they do not glare at neighbors or drivers.

Pixel Pitch and Viewing Distance

Pixel pitch is the distance between pixels. A smaller pitch gives sharper images at close range but costs more per square foot. A larger pitch works well when the audience is far away, such as drivers on a road. Match the pitch to the typical distance of the viewer.

Weather Ratings

Look for an ingress protection rating, which shows how well the display resists dust and water. Outdoor signs also need to handle heat, cold, and humidity. Ask about the operating temperature range and how the sign is cooled.

Full-Color Content

TV Liquidator lists a category of full-color LED signs. Full-color displays can show images and video, while simpler signs show only text in one or a few colors. Think about what you plan to show, and who will create it.

Spec Sheet Checklist

Brightness in nits, with dimming controls
Pixel pitch and resolution
Ingress protection rating
Operating temperature range
Power use and electrical requirements
Viewing angle

Software and Control

Ask how content is loaded, whether it can be scheduled, and whether it works from a phone or computer. Check what happens if the connection drops.

Local Rules

Many cities regulate brightness and how often a message may change. Check local rules before you buy, and ask the supplier whether dimming and scheduling features help you comply.

Compare Total Cost of Ownership

Price on a quote is only part of the story. Add the cost of power, content tools, warranty length, and expected service visits over several years. A display that costs more up front may cost less to run, and a cheaper display may need more upkeep. Ask suppliers for typical power use figures and the warranty terms in writing so you can compare fairly.

Where to Read More

Shoppers comparing Outdoor LED Signs can read the full-color LED signs category at TV Liquidator, which lists the available displays. Because specifications differ by model, confirm each number with the company before ordering.