X10 Signal Absorbers
This page lists particular household electronic devices that have been
found to interfere with X10 signals. Having the device listed on this
page does not mean that the device itself is defective in its design
since X10 signals are not part of the specification for normal
household power. Listing simply means that certain instances of the
listed device have been found to be incompatible in some circumstances
with reliable use of X10 home automation. Whether you will experience
problems will depend on many factors, including whether the device is
on the same circuit or phase as your X10 transmitters or receivers,
the combination of effects with other devices, and whether you are
using filters and similar techniques to mitigate the interference or
When you find a suspect device and confirm that it is causing your problem (by unplugging it and checking if the problem persists), you can usually address the problem by using an X10 power line filter placed between the plug of the suspect device and the wall outlet. I recommend either the 5A FilterLinc or the 10A FilterLinc Plug-In X10 Noise Filter. Another option is the XPPF filter made by X10.
Please send mail to firstname.lastname@example.org if you have experience with devices not listed, or if you have additional information regarding any of the devices that are listed.
General CategoriesThe following classes of devices often present problems for X10 signals and may require filtering. If you are having problems with X10 signals in your house, try uplugging all devices of these type, test your setup, then plug back in devices one at a time and test until the problem reappears.
Specific devicesThe following devices have been found specifically to cause problems for X10 signals. The problem can usually be solved by installing a filter between the device and the power outlet, but you should check the device yourself before taking this step, as the conditions in your house may be different and the device might not cause a problem. To check the device, when you have an X10 problem, unplug it and see if it solves your problem.