Question 1

What is an LED signage module?

Accepted Answer

An LED signage module is a small, low-voltage lighting unit used inside channel letters, sign cabinets, light boxes, and other illuminated signs. Modules are selected based on brightness, beam angle, efficiency, spacing, sign depth, voltage, and face material.

Question 2

How do I choose the right LED module for a sign?

Accepted Answer

Choose an LED module based on the sign type, letter depth, stroke width, face material, and required brightness. Narrow stroke letters need small modules like the TMT Tiny. Deep channel letters or sign cabinets benefit from higher-output modules like the TMT Midi 4 or Midi Edge-lit.

Question 3

What LED module is best for channel letters?

Accepted Answer

For small and medium channel letters, the TMT Mini 2 Game Changer (107-165 Lm, 160 degree beam) is widely used. For larger channel letters, the TMT Midi 4 Game Changer (250-300 Lm, 170 degree beam) or Midi 3 Game Player (225 Lm) are common choices. The Midi Edge-lit module is designed for sign cabinets and edge-lit lightbox applications, not standard channel letters.

Question 4

How do I calculate LED power supply requirements?

Accepted Answer

Multiply the number of LED modules by the wattage per module to get total connected load. Divide by the usable capacity of your power supply (typically 80 percent of rated wattage for Class 2 supplies) and round up to get the number of supplies needed. Use the LED Knowledge Center ROI Calculator for a guided estimate.

Question 5

What does lumens per watt mean for LED signage?

Accepted Answer

Lumens per watt measures how efficiently an LED module converts electrical power into visible light. A higher lumens-per-watt value means more light output per watt consumed. Final sign brightness also depends on optics, module spacing, sign depth, and face material transmission.

Question 6

What is the TMT Midi Stick system?

Accepted Answer

The TMT Midi Stick is an aluminum I-beam rail system for mounting Midi series LED modules inside sign cabinets. Modules snap in without tape, screws, or glue. The system is cut to length on-site and supports single-sided and double-sided cabinet installations.

Question 7

Should LED ROI calculator results replace a final layout?

Accepted Answer

No. The LED ROI Calculator provides planning estimates for module count, energy cost, power supply requirements, and installation time. Final layouts should verify sign depth, stroke width, face material, voltage drop, loading margin, code requirements, and service access.

Question 8

What is Class 2 for LED power supplies?

Accepted Answer

Class 2 is a UL safety classification limiting each low-voltage output circuit to a maximum of 100 VA (60W at 12V via the 5A limit). Larger TMT supplies provide multiple independent Class 2 circuits. For example, the 240W model provides four independent 5A Class 2 circuits. This simplifies code compliance for LED sign lighting installations.