Incandescent Lights Only
Why can’t I use the X10 WS467 Wall Switch Module to control a fluorescent light?
The main reason why the X10 Wall Switch Module cannot be used to control a fluorescent fixture is because it is a two-wire device and is hence wired in series with the load. The control signals, which are transmitted onto your house wiring therefore have to pass through the incandescent lamp (load). However, a fluorescent light contains a ballast which acts as a block to the X10 signals and makes it impossible to control the switch remotely. Also, this ballast is an inductive load (a coil), and controlling such a load could permanently damage the Wall Switch Module. This is also why the WS467 should NOT be used to control any kind of appliance (such as a ceiling fan). A Wall Switch Module for controlling fluorescent fixtures, model XPS3 is available from www.x10pro.com.
X10 PRO also has a version for controlling ceiling fans, model XPDI3. Note however, that the XPDI3 and XPS3 are commercial grade switches that require a neutral connection. There often is no neutral wire available at the location of the switch you are replacing. Therefore these switches are recommended for installation only by a qualified electrician.