The S2266M module allow to dim two individual lamps, being small enough (43 x 47 x 18,9 mm) to fit behind a wall switch or junction box. It allows to control both internal relay either using any conventional electric switch (push buttons are not supported) or remotely, using any X-10 compatible controller.

This module has a special feature which allows setting 16 distinct X-10 addresses to each internal relay. This is very useful to create macros.