A mini driver with a BIG job to do! The HanleyLED Mini Driver is small enough to fit in the palm of your hand but can load 22 power supplies on a 20-amp circuit. It is great for everyday LED sign use, like self-contained channel letters, shallow signs, narrow raceways or simply anytime you need a high-quality, mini power supply. It is dry, damp, and wet rated and has a variable input voltage of 100-277Vac.