Constant-Current Driver—Constant current drivers are the most common and are often used with commercial and industrial lighting. They’re best for consistent brightness. Those with multiple output currents include a switch, so you can select the output current closest to your needs. Keep them on hand to replace drivers with varying current requirements.

Constant-Voltage Driver—Constant voltage drivers are best for long runs of lights, such as strip or tape lights, to maintain stable voltage. Rated IP65, they’re protected from dust and low-pressure jets of water. They’re safe for use as replacements in outdoor fixtures exposed to rain and wet conditions.

LED Driver Type—Drivers with constant current or constant voltage perform one function at a time. They automatically detect the light’s requirements and supply the appropriate type of power.