Thomas Research Products (Huntley, IL) has expanded their recently introduced step-dimming module product line with additional options for easy dimming control of LED luminaires. TRP is a leading manufacturer of SSL power solutions. SD series devices work with two standard wall switches to allow multi-level step-dimming of LED luminaires. Two models provide 3 levels of light output. The SD3-25 offers 25-50-100% output. The SD3-33 offers 33-66-100% output. Also available is the SD2 bi-level module, which offers 50-100% light output. The SD Series gives manufacturers and facility managers new options for control of their lighting. They are intended for indoor use. TRP's step-dimming modules are perfect for applications where quick switching between light levels is needed, eliminating the need for an expensive dimmer. Features include:

  • Provide easy control of lighting by occupants.
  • Modules work with occupancy sensors.
  • Operate in conjunction with any 0-10V dimmable LED Driver, from any manufacturer.
  • 100-277Vac universal voltage input.
  • Low insertion loss.


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