Thomas Research Products has introduced a new step-dimming module that offers easy bi-level dimming control for LED luminaires. TRP is a leading manufacturer of SSL power solutions. The SD1 device works with two standard wall switches to allow bi-level step-dimming of LED luminaires. It is perfect for situations where quick switching between 100 percent and 50 percent output is needed, such as occupancy sensor applications. Uniquely, it works in conjunction with any 0-10V dimmable LED driver, from any manufacturer. The SD1 gives manufacturers and facility managers new options for additional control of their lighting. It is intended for indoor use. TRP's step-dimming module features 100-277Vac universal voltage input and low-insertion loss.