LED Education Center

We understand that finding an LED sign that is right for your organization can be a confusing ordeal. At Stewart, we strive to make the purchasing process as easy and straight-forward as possible.

The following information gives insight to LED technology, and applies to all of our lines of LED signs. Please do not hesitate to contact us for more information.


LED Display
TekStar DayStar
Display position Integrated with
sign face
Separate cabinet
Available matrix sizes From 16x80 to 96x288 From 24x72 to 96x224 (custom sizes available)
Available display colors Full-color or red Full-color or red
Lines of text Up to 7 (depending on matrix) Up to 12 (depending on matrix)
Pixel pitch 10mm, 16mm, 20mm 10mm, 16mm, 20mm, 26.6mm
Viewing cone 140 degrees horizontal Full 180 degrees horizontal
LED display warranty 5 years 5 years
NIT rating Up to 8,000 Up to 10,000
Colors 281 quintillion full-color, 6.5 million red 281 quintillion full-color, 6.5 million red
LEDs per pixel 3 for full-color
2 for red
4 for full-color
2 for red
100,000 hour LED lifespan (at full brightness 24/7) Yes Yes
Instant recovery from power outages Yes Yes

ID Cabinet & Support Structure (when applicable)
TekStar DayStar
Vandal and graffiti resistant Makrolon SLĀ® face Yes Yes
Powder-coated frame Yes Yes
UV resistant vinyl graphics (when applicable) Yes Yes
Lifetime warranty for support structure and faces Yes Yes

Software & Capabilities
TekStar DayStar
Display programming software SignCommand.com SignCommand.com
Graphics library Yes Yes
Transition and display effects Yes Yes
Light sensor and manual brightness control Yes Yes
Use your own images, pre-recorded video clips and animations Yes Yes
Show different messages on each side of the sign Yes Yes
Scrolling text Yes Yes
Text over video and images Yes Yes
Add an outline around text Yes Yes
Scheduling Yes Yes
Control from many computers Yes Yes
Display time & temperature Yes Yes

LED Cabinet
TekStar DayStar
LED cabinet width options 6, 8, 10 or 12 feet (custom sizes available) 6, 8, 10 or 12 feet (custom sizes available)
Product compliance UL Listed (#E352634) UL Listed (#E352634)
Weather rating IP 65
LED display vandal cover Yes (optional)
Temperature-controlled fans Yes

Why Does Brightness Matter?

There are two important things to consider related to the brightness of your sign: how well and how long it will compete with the Sun.

How well a sign competes with the Sun
Ensuring that your sign is readable during the day is vital to the success of having passers by read your sign. The brighter the display, the better able it is to compete with the Sun.

How long a sign competes with the Sun
LEDs do not burn out, however they do grow dimmer with use. The closer an LED gets to 1500MCD, the less effective it is at competing with the Sun. Starting with a brighter display ensures that your investment will be readable for many years into the future.

Stewart LEDs are among the brightest available to provide you with a sign that will be visible 24 hours a day, and for years into the future.

LED Definitions

A light-emitting diode (LED) is a semiconductor device that illuminates when electricity passes through it. LEDs do not contain filaments like regular light bulbs, and they do not have delicate parts that break or burn out over time. Industry standard LEDs are rated at 100,000 (11+ years) of constant use.

A pixel is a point of light. An LED display is made up of an array of pixels, multiple points of light appearing as dots. A pixel can be as small as one LED or it may contain a cluster of LEDs that act as a unit.

Pixel Pitch (Center-to-Center)
The pixel pitch or center-to-center measurement is the distance from the center of one pixel to the center of the adjacent pixel. Pixel pitch can be measured in inches or millimeters.

The matrix of a sign is the number of pixels vertically by the number of pixels horizontally. For example, if a sign has a matrix of 32x96, this means it has 32 pixels from top to bottom and 96 pixels from left to right. A larger matrix allows more text and more of a graphic to appear on the display at the same time.

Millicandela (MCD)
A millicandela is a unit of measurement for the brightness of a single LED. A millicandela is equal to 1/1000 of a candela, which is comparable to a single candle’s brightness.

A nit is a unit of measurement for the brightness over one square meter of a display. This value takes into account the number of LEDs per pixel, pixel pitch and millicandelas. Your sign’s nit rating can help you determine which sign is a better value when comparing products and companies.

Viewing Angle & Viewing Cone
The viewing angle is the maximum angle that text and images can be seen on a display. A narrow viewing angle causes the text or image to “disappear” from the display as a viewer moves away from a position directly in front of the sign. The viewing cone is simply double the amount of the viewing angle.