Unlike conventional X10 PRO Modules, the PSM04 Screw-in Lamp Module does not have any House and Unit Code Wheels. You setup the Address Codes over the electrical power lines of the home from an X10 PRO Controller (such as a PMC01 Mini-Controller). The Screw-in Lamp Module "remembers" its Codes even after power outages. Because of its ability to remember the Codes (powered off), you can setup the PSM04 at any lamp fixture and then move it to its final destination.
Only 1 1/4 inches in diameter (it extends the bulb by about 1 1/4 inches) with a 3/8 inch bump on one side, this Module will fit inside the cover of most wired-in light fixtures, such as ceiling lights with glass or plastic covers. And because it's small enough to fit under most lampshades, it's perfect for table lamps, too.
Specific Requirements: 120VAC, 40-150W, Lamps rated below 40W may flicker and/or operate erratically. NON DIMMING Incandescent Bulb Only (Do not use with CFL - Compact Fluorescent Light Bulbs!)