The majority of X-10 units are available only for the USA market where the mains supply is 115 volts at 60 Hz but the UK mains supply is 230 volts 50 Hz.  It is however possible to modify some USA modules to operate at 230 volts.  Most of the pages on this site provide details of modifications actually performed by the author from X-10 modules bought from Smarthome.

Warning

This information is provided for information only and is not guaranteed to be correct, and I urge you not to attempt these modifications unless you are technically competent. I accept absolutely no responsibility for any modifications you perform or the effects of any such modifications.

Performing these modifications will invalidate your warranty and could render the modules in a dangerous condition and without CE approval. Finally, make sure all installed modules have appropriate fuses and cable to reduce the likelihood of fire.

For further details, please:

Here we explain how to modify a USA 115V PF284 Power Flash module to operate at 230V.

Here the procedure for modifying X-10 modules is explained.  This section should be thoroughly read before attempting any modifications.  Details provided are of:

• Components needed
• X-10 module-specific guidance
• Triacs
• Appliance Modules
• USA Heavy Duty Modules
• MOVs and VDRs
• Autotransformers
• Voltages and Frequencies

Warning

If you are going to carry out any modifications to the USA X-10 devices so that they operate at 230V and not 115V, can I please implore you to fully read the X-10 Mods and X-10 Mods - General Principles pages, remembering that you perform any modifications at your own risk.

Here we explain how to modify a USA 115V RR501 Transceiver module to operate at 230V.

Here we explain how to modify a USA 115V AM486 Appliance module to operate at 230V.

Here we explain how to modify a USA 115V SC503 Maxi Controller to operate at 230V.

Here, we explain how to modify a USA 115V CP290 Computer Interface to operate at 230V.

Here we explain how to modify a USA 115V SC546 Chime module to operate at 230V.

Here we explain how to modify a USA 115V IBM Home Director module to operate at 230V.

Here we explain how to modify a USA 115V SR731 RF Repeater module to operate at 230V.

Here we explain how to modify a USA 115V JDS Time Commander Plus to operate at 230V.

Here we explain how to modify a USA 115V Stanley Motion Detector module to operate at 230V.

Here we explain how to modify a USA 115V LM465 Lamp Module to operate at 230V.

Here we explain how to modify a USA 115V TM751 Transceiver module to operate at 230V.

Here we explain how to modify a USA 115V MC460 Mini Controller to operate at 230V.

Here we explain how to modify a USA 115V TW523 Power Line Interface module to operate at 230V.

Here we explain how to modify a USA 115V MEGA32 Mega Controller to operate at 230V.

 Here we explain how to modify a USA 115V WS467 Wall Swith to operate at 230V.