Bi-Level
Type C Tubes

Simplified inventory combined with unmatched flexibility.

Keystone’s Bi-Level Type C LED Tube System delivers flexible lighting upgrades without added complexity. With switch-controlled brightness, adaptable color options, and a streamlined driver platform, it simplifies retrofits while giving spaces dimming functionality and utility benefits without added cost. That’s Light Made Easy®.

Bi-level dimming

With our driver-based bi-level dimming, this lamp system delivers 50%, 70%, and 100% baseline brightness levels. And users can toggle between two selected brightness settings simply by using a standard wall switch—no sensors, control systems, or additional wiring required. Just set the driver at your selected baseline brightness, toggle on-off-on within 5 seconds, and the brightness adjusts between your selection and 100% automatically. It’s a great solution that can handle the differing needs of hallways and task-focused applications, daytime and after hours, and low- and high-traffic periods.

2-Lamp Driver

4-Lamp Driver

Only 2 driver options necessary

The system is centered around a 2-lamp driver and a 4-lamp driver. Both drivers are compatible across 2-foot, 3-foot, and 4-foot tubes, creating a streamlined platform that reduces complexity while expanding application flexibility. That means broader coverage and a smarter inventory.

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Consolidate SKUs

Our Bi-Level Type C tube reduces potential lamp/driver combinations down to just 6 core SKUs, helping distributors, contractors, and project managers simplify stocking, reduce costs, and standardize across projects. It’s a smarter way to manage retrofit lighting.

Power Select

Color Select

Power Select and Color Select

With field-adjustable Keystone Power and Color Select technology, you can optimize energy usage and set color temperatures based on your needs. Power Select offers 3 options—100% / 80% / 60% output settings—while Color Select features 5 CCT options (3000/3500/4000/5000/6500K). Dedicated 4000K models are also available. Combined with the bi-level dimming, you get flexibility at installation and long after the project is complete.

The right solution for your application

Keystone offers a full portfolio of linear LED tube solutions designed for retrofit flexibility, installation preference, and project requirements, including Type A models for plug-and-play upgrades, Type B ballast-bypass versions for direct-wire installation, Type A&B hybrid models offering installation flexibility, and Type C for enhanced performance and system control. No matter your application, Keystone makes upgrading fluorescent systems simple, reliable, and efficient.

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