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Develop Your Own X10-Compatible Product or Software!
X10 TW523 X10 Two-Way Interface Module
X10 TW523 X10 Two-Way Interface Module
X10 TW523 X10 Two-Way Interface Module
Item# 1135
Free shipping on orders over $175 - See Details


  • Send and receive X10 signals
  • Develop your own X10-compatible products for sale without the cost of UL approval

Essential Info

If you know how to send and read RS232-type serial communication with your computer or from any other electronic device, you can develop and market your own software and/or hardware for use with X10-compatible systems without having to develop your own X10 communications hardware or having to go through costly UL approval. This module is optically isolated and UL approved. The timing-critical nature of communication with this device requires low-level hardware programming experience. It may also require dedicated microprocessor time. Thus, it is not recommended for casual programmers.

You can even make this device a wireless interface! The All-Housecode RF Transceiver (sold separately) contains everything you'll need to add wireless capabilities to the X10 TW523 Two-Way Interface Module.

Note: This item does not come with any cables.


What's Included

  • X10 TW523 Two-Way Interface Module
  • More Info

    Due to the nature of this product, Smarthome cannot offer programming support. We cannot assist in the troubleshooting or development of applications and/or code for this product.

    For X10 send only applications: If your application only needs to send X10 signals and does not need to read X10 signals, then order the X10 One-Way Interface Module.



    Manufacturer:X10 Pro
    Manufacturer Product No.:TW523 PSC05
    Compatibility:X10 compatible

    Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Authinx Inc, dba X10 PRO USA, Tel: (888) 384-0969


    50 Ratings
    5 star: 58%  (29)
    4 star: 24%  (12)
    3 star: 6%  (3)
    2 star: 8%  (4)
    1 star: 4%  (2)
    Average Customer Rating
    (50 customer ratings)
    Share your thoughts with other customers
    Kevin Pollard -- pittsburgh, PA   2/2/2012
    It broke within 1.5 years
    WILLIAM -- burnsville, MN   11/18/2011
    Bought it for a SecurLinc2 system, and it apparently doesn't work at all. My X1 system works (units and controllers), but this thing isn't talking at all. I should've gotten a one-way unit and saved some money.
    LEONARDO -- bogota, XX   10/18/2011
    very good article
    MARK -- oviedo, FL   8/11/2011
    Had to replace a 15 year old item. This worked great and came quickly.
    JOSEPH D -- baltimore, MD   8/5/2011
    I had a TW523 connected to a system that worked but became increasingly unreliable in controlling devices. I suspected that the TW523 was degrading in transmitting signals. I replaced it with this one and that seemed to solve the problem.
    CHESTER -- norcross, GA   3/28/2011
    The price and service were superior
    DEVLIN -- ledgewood, NJ   2/24/2011
    Works well with my DIY controller
    MICHAEL -- arlington, VA   1/13/2011
    The unit arrived in tact and in working order. So far, so good!
    VIJAYA -- baton rouge, LA   9/20/2010
    Unit delivered was precisely what was ordered and worked perfectly. Delivery was prompt. Very pleased with the way the order was processed by Smarthhome.
    JOSEPH -- cherry valley, ON   8/31/2010
    No problems at all. This order was properly shipped, packaged and received.
    KELLY L -- anaheim, CA   8/29/2010
    The order was shipped fast, but I wish this item would last more than a year.
    WILLIAM -- gardiner, MT   7/22/2010
    Simple install and easy to integrate into the X-10 system.
    DELOS -- port ludlow, WA   3/23/2010
    Use with HAI system, I thought my old one went out, seem my HAI system is going out instead.
    Thomas -- Central NJ   3/18/2010
    The description of this product is a little misleading. What was actually shipped and what I received was the X10 Pro PSC05 2-Way Powerline Interface. No matter. The PSC05 and TW523 are basically interchangeable. Using the 7ft RJ11 Crossover Connecting Cable, I connected it to my HAI Omni Pro-II home control system. It works perfectly. Other than X10, my network consists of regular HLC devices, as well as non-HLC UPB devices. Everything works as it should. Very pleased with this purchase.
    TIMOTHY -- eugene, OR   2/10/2010
    I haven't written the code for incoming X-10 commands, but I have been able to send them just fine ... after reading the tech note on your web site ... it was a good excercise for me (felt like I was in school), and I got an A.
    PATRICK -- grants pass, OR   9/6/2009
    Works exactly as expected. My old one failed during a lightning storm, even though it was on a surge protector. I simply unplugged the old one and plugged in the new one and I was back in business. Smarthome's service was excellent and I am very pleased.
    DAVID -- san jose, CA   8/21/2009
    Works very well. I bought a new one to replace one that had been on duty 24/7 for roughly 12 years.
    KIMBERLY -- galveston, TX   5/1/2009
    Great Product. Simple plug-and-play installation. Works exactly like the original unit at half the price. I would definitely recommend. Thank you.
    ERIC -- tiburon, CA   12/12/2008
    Fast service. My old TW523 appears to be okay, it was the Ocelot controller that died. Oh well...
    PAUL -- charlotte, NC   2/21/2008
    Works well.


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