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Noise Filters
UPB Compatible
X10 Compatible
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Beginner (Installs < 10 minutes)
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Block Out Noisy Appliances to Isolate Your X10 Circuit
Advanced Control Technology AF120 15-Amp Plug-In Noise Filter
Advanced Control Technology AF120 15-Amp Plug-In Noise Filter
ACT AF120 15-Amp Plug-In Noise Filter
Item# 4845ACF
Price: Normally $40.00 
Hot Deal $36.67
Free shipping on orders over $175 - See Details


  • Just plug it in, no hardwiring involved
  • Rated for higher-current devices than 5-amp plug-in noise filters
  • Perfect for blocking line noise from refrigerators, furnaces, computers, etc.

Essential Info

Isolate electrical line noise from appliances like refrigerators, furnaces or computer systems to keep your X10 signal strong. This model is built with a 30:1 attenuator ratio on frequencies between 30kHz and 200kHz. This noise filter helps keep X10 signals from being absorbed by loads like your computer's UPS uninterruptable power supply, computer system, or televisions/monitors.


What's Included

  • 1x - 15-Amp Plug-In Noise Filter
  • 1x - Owners Manual
  • Specifications

    Manufacturer Advanced Control Technology
    Manufacturer Product No. AF120
    Dimensions 4.25 inches (L) x 2.23 inches (W) x 3.07 inches (H)
    Weight0.5 pounds (8 ounces)
    Electrical Requirements
    Supply Voltage120 VAC, ± 10%
    Frequency50 Hz or 60 Hz
    Load Current15A maximum
    Load Attenuation30:1
    Replacement Fuse 250 VAC, 15A Slow-Blow Fuse (Littlefuse Part Number 326015)
    Mechanical Requirements
    Power ConnectionsInput: 120 VAC – 3 prong polarized plug

    Output: 120 VAC – Single 3 prong polarized receptacle
    Environmental Requirements
    Operating Temperature32°F – 120°F
    Storage Temperature-20°F – 150°F
    Operating Humidty10% to 95% non-condensing

    Important notes:
    Defective exchanges for identical item within 30 days of purchase. After 30 days, please contact the manufacturer.
    Manufacturer contact information: Advanced Control Technology Inc, Tel: (317) 337-0100 Ext 236


    185 Ratings
    5 star: 58%  (107)
    4 star: 18%  (34)
    3 star: 11%  (20)
    2 star: 3%  (6)
    1 star: 10%  (18)
    Average Customer Rating
    (185 customer ratings)
    Share your thoughts with other customers
    THOMAS E -- moosic, PA   6/1/2014
    Good Quality Item At A Fair Price. No More Bzzzzzzzzz... Through My Speakers!
    HOWARD -- summit, NJ   4/12/2014
    After a new smart tv was added to the bedroom the X10 commands stopped working. Adding the ACT AF120 allowed the transmission of the commands.
    VERNON -- banning, CA   12/28/2013
    I was looking for a noise filter for better radio reception. This item did not noticably reduce the noise.
    Matt -- Pennsylvania   11/3/2013
    AF120 worked great up until it oozed out all this goop out the bottom plug. It stopped supplying power to my fish tank filters and air pump. Fuse never blew in the unit. Came home from vacation to find all my fish dead : Would not buy again.
    DUANE -- tampa, FL   8/15/2013
    We have used this on large appliances like refrigerators, microwaves, pc ups stations on an on. Again they immediately klill noise for thiose of us still liking PLC stuff.
    JEFF -- taylor, MI   4/27/2013
    These do a great job on the frig and freezer.
    JOHN -- san mateo, CA   3/28/2013
    Used on my electronic garage door opener which was absorbing a significant amount of x10 signal. Works perfectly, preventing a signal voltage drop from 4 v to .5 volt.
    CRAIG -- indialantic, FL   3/17/2013
    Solved my problem where my A/V electronics were interfering with X10.
    RICHARD -- lexington, SC   12/8/2012
    It got to me quickly and did what I needed.
    DEVIN -- oakley, CA   11/11/2012
    Filters my ventless washer/dryer on a 15 amp 110 volt circuit. Corrected my noise issue.
    R -- palos verdes peninsu, CA   10/25/2012
    It does the job. But the Leviton TV preamp I bought at the same time is useless. it makes signals weaker rather than stronger
    DALE -- minneapolis, MN   8/23/2012
    I'm still experiencing difficulties and have not had consistent response with x10 signals. I was hoping several noise filters would eliminate my problem. Not convinced yet.
    RICHARD -- lexington, SC   8/16/2012
    It does exactly what I needed. My computer's UPS was preventing X10 devices on the same circuit from responding. With the UPS plugged into this "noise filter" everything works as desired.
    WDPS -- pipersville, PA   4/30/2012
    Difficult to tell if a filter is working properly, but at least it hasn't melted like the X10 10A filter.
    SAMAR -- cupertino, CA   4/8/2012
    3 stars because it did not completely eliminate the problem. It did significantly help with noise in my line though, so I do think it is a good product.
    JACQUES -- broken arrow, OK   3/31/2012
    I was hoping this device would reduce the electrical noise generated by my treadmill. It did not make any difference at all. I cannot listen to any radio in my house while my treadmill is in use. Even battery operated radios receive the electrical noise which makes it impossible to listen.
    MIKE -- loveland, OH   1/5/2012
    Does the job well at a reasonable price.
    ARIC -- queen creek, AZ   12/30/2011
    I wanted to be able to turn on/off a Department 56 Christmas village setup. I've read that the power supplies that run the little motorized/animated items can be noisy (actually some say they are signal absorbers.) Prior to purchasing this filter I was able to turn the village on with an appliance module but after that I couldn't turn it off due to the interference. I purchased this item, plugged it after the appliance module and before the power strip leading to the village. Now everything works perfectly. I chose this one over the smaller ones because I didn't want to worry about amperage. When using appliance modules they a rated for 15 amps so I wanted a filter that could match that rating.
    WILLIAM -- lakeville, MN   12/17/2011
    Excellent on the UPS unit! Corrected an intermittent noise problem.
    JAMES -- columbus, OH   10/20/2011
    A little large and hard to plug in a receptable and plug anything else in it.


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