Lamp modules can be used with 3-way (30/70/100 or 50/100/150 Watt) bulbs and they can be dimmed, I've never attempted a 50/100/200. If you unplug the module, the lamp should go out, as it gets it's power thru the module. If a lamp module fails, it cannot work, period as it will not receive X10 signals. A failed module's next stop is the trash can.