Inlight Therapy controllers are engineered with Progressive Multi-Pulse™ technology that delivers a combination of blue, red, and near-infrared wavelengths (photons) to the skin. The controllers are highly user friendly and built with pre-programmed automatic settings containing the Progressive Multi-Pulse technology and a 20-minute shut-off timer. The input jacks fit all Inlight Therapy therapy pads, and all pads and controllers can be used interchangeably.