DIMMERS AS IS CAN NOT BE INSTALLED SIDE BY SIDE IN SWITCH BOX. Incandescent Light Dimmer for Permanent Fixtures. (DO NOT USE ON FLUORESCENT FIXTURES OR FANS.) The modern convenience of a dimmer switch in the Classic styling of Push Button design. The external parts of the Push Button Dimmer are almost indistinguishable from the standard Push Button Switch. The top button pushes in and serves as an on-off function. The bottom button rotates to increase or decrease intensity. 300 Watts - 120 Volt - Single Gang All our switches are replicas of the push button switches that were used in homes around the United States from the turn of the century to the 1950's. They are built to the specifications of modern electrical code and used for replacing your old push button switches and also great for new construction. They add an unique and classic element to any room. NOTE: When using a dimmer within a 3-way or 4-way circuit only one switch can be a dimmer, the other 3 way switch needs to be a mechanical switch (HD3).