Professional Grade LED Christmas Light Strings

Pro grade LED Christmas light strings at The Christmas Light Emporium are built for professional installers, commercial properties, and serious residential displays that need commercial-grade durability and light output. The ProCore® system uses separate stringer wire and individual screw-in LED bulbs — giving installers full control over color, format, and configuration. Browse LED Christmas light strings for the full string range.

What's In This Collection

ProCore® LED Christmas light strings in 5mm, M5, C6, and G12 lens styles across all standard colors. Commercial-grade stringer wire in multiple lengths. Available in steady-on, DreamSpark® slow fade, SuperSpark® strobe, and QuadSpark® twinkle effect versions. Backed by the Reindeer Proof™ Warranty. See C7/C9 stringer wire for larger-format commercial stringer systems.

How to Choose

Choose your lens style based on the application: 5mm wide-angle for dense, bright coverage on trees and architectural outlines; M5 faceted for a traditional incandescent sparkle; C6 for a bolder strawberry-shaped point of light; G12 globe for a full-sphere ambient glow. For commercial roofline and eave work, match string length to the linear footage of your installation. All ProCore® strings are outdoor-rated and built for multi-season professional use.

Frequently Asked Questions

What makes ProCore® LED strings different from standard LED strings?

ProCore® strings feature indestructible polycarbonate lens construction with precision light filtering for consistent, vibrant color output. They are built to commercial specifications for multi-season professional use.

Do pro grade strings come in effect versions?

Yes. ProCore® strings are available in steady-on, DreamSpark® slow fade, SuperSpark® strobe, and QuadSpark® twinkle variants depending on the color.

Are specialty effect strings dimmable?

Specialty effect strings — including slow fade, strobe, and twinkle variants — may not be dimmable or may display undesirable behavior when used with a dimmer. Steady-on strings are dimmable.

How many strings can I run end-to-end?

Maximum end-to-end connections are listed on each product page. Do not exceed the rated limit — overloading a circuit causes overheating and breaker trips.

What's the difference between 5mm and M5 lens styles?

5mm is a wide-angle dome lens — a small, round point source that spreads light broadly. M5 is an elongated faceted lens that replicates the look of a traditional incandescent mini light with sparkle from the faceted surface. Both are the same LED size but visually distinct.