A versatile T8 LED tube for plug & play or ballast bypass applications.


ComboDrive T8 LED tubes offer maximum flexibility in both technology and application. Choose between single or double ended wiring constructions. You also have the option of using them as a UL Type A LED tube with an instant start ballast, or in a ballast bypass application as a UL Type B tube. Our ComboDrive tubes are fully safety certified for both methods.

For the plug and play application the tube can be installed without any changes to the fluorescent ballast wiring. Installation is as simple as switching out the fluorescent tubes with T8 LED tubes. When using this option, should the instant start ballast fail, simply take it out and connect the T8 LED tube directly to the line voltage. This allows you to keep using the same lamp instead of replacing it.

For the ballast bypass option, just connect the tube directly to the 120-277V line voltage following the wiring diagrams. They’re compatible with most instant start electronic T8 ballasts. Keystone offers replacement lamp holders if needed.

ComboDrive Benefits

  • Saves time with plug and play design; no rewiring needed
  • Saves energy compared to their fluorescent counterparts
  • Reduces maintenance and replacement costs with longer lifespan
  • Provides convenience with flexible installation options
  • Reduces stocking needs for distributors
  • Offers Type B functionality if ballast fails in Type A application

Product Features

  • Environmentally friendly: No mercury used
  • UL Listed & UL Classified
  • Instant Startup
  • Frosted lens eliminated pixelation
  • Operating Temperature: -20°C/-4°F to 45°C/113°F
  • 100+ lm/W (bare lamp efficacy)
  • Suitable for dry and damp locations

cULus Classified Mark RoHS Compliant logo 5 Year Warranty

Combo Drive T8 Features

Tech Specs

Request a Lighting Layout

Keystone offers complementary lighting layout services for our products, to help take the next step in bringing your project to life. We can provide answers to your lighting questions to determine how many fixtures you need, what types of lamps are best for your applications, and how to save the maximum amount of energy, all within budget.

By utilizing industry leading lighting layout design software, we provide accurate and dependable application renderings. For new constructions or retrofit, simply provide Keystone with a few key project details, and our lighting designers will get to work on your request.

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