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  • Liftmaster 41A3504 Residential Garage Door Opener Antenna Extension Kit
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Liftmaster 41A3504 Residential Garage Door Opener Antenna Extension Kit

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Price: $35.95 & FREE Shipping
Only 10 left in stock.
Ships from and sold by Preferred Doors LLC.
4 new from $29.81

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$35.95 & FREE Shipping Only 10 left in stock. Ships from and sold by Preferred Doors LLC.

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Liftmaster 41A3504 Residential Garage Door Opener Antenna Extension Kit + LIFTMASTER Garage Door Openers 877MAX Wireless Keypad
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Product Description

Buy the Liftmaster 41A3504 Residential Garage Door Opener Antenna Extension Kit at North Shore Commercial Door, starting from just $25.85. We offer excellent customer service, fast shipping, and great selection. Can't find what you're looking for? Call us!

Product Information

Technical Details
Part Number 41A3504
Item Package Quantity1
  
Additional Information
ASINB004K2YH4E
Best Sellers Rank #57,455 in Home Improvement (See top 100)
Shipping Weight1 pounds (View shipping rates and policies)
Date First AvailableJanuary 20, 2011
  
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Customer Reviews

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Most Helpful Customer Reviews

67 of 68 people found the following review helpful By Jeans Kids on October 6, 2011
Hey, it works, it's inexpensive, and it's easy to install.

I now live in a growing development of over 2000 homes. All have the same Chamberlain Liftmaster garage door openers. Our driveways are fairly short, just less than two car lengths. Initially, I'm sure there were no problems and the garage door would open from somewhere just down the street. But sometime over the past year, the operating range got shorter and shorter, to the point where I was afraid of hitting the garage door to get close enough to open it. Occasionally, usually when raining, it would not open at all. And on other days, it worked fine from 100' away.

So before I eventually rammed the garage door, I started researching the problem. I was surprised at how little useful information I found. Typically the given solution was to replace the transmitter batteries and/or locate the RF interference and eliminate it. Not very helpful when both cars have vehicle installed openers, and both have the same inability to open the garage door (although they worked fine at the old house). Nobody tells how to find and eliminate the possible RF problem emissions. All my close by neighbors and I have WIFI, wireless phones, microwaves, and countless other electronic gadgets. Where would I start? I needed a better solution.

My research led to the 41A3504 Antenna Extender Kit. I looked for one at my local Lowes box store, but they don't carry it. It was available from several online vendors, most with similar pricing, and I bought from Gatehouse. The kit was about $24 and shipping about $8. It came in just a few days.

The kit includes a small antenna, mounting bracket, and 15 feet of coax cable with attached fittings. Most ads for the kit do not mention the length of the cable.
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18 of 21 people found the following review helpful By Keith Chiem on March 2, 2013
I'll try to keep this concise.

It works.

The instructions recommend cutting the included 15 ft coaxial cable and stripping it so that the center conductor is connected to the antenna and the outer shielding is connected to a grounded point--clamped to one of the screw/nuts on the garage opener's mounting frame was suggested. Using a continuity tester, I noticed that one of the screws on the cover of the garage opener had continuity to the mounting frame, and was thus grounded. Thanks to one of the other reviews here that suggested using a cable grounding block, this made for a really easy and tidy install, as all I had to do was attach the grounding block to that screw. I already had extra coaxial cables and tools for working with them around, so I stripped a 10" coaxial cable segment on one end and connected that to the stripped end of the antenna with a screw-on connector; the other end of the coaxial cable got an F connector and was connected to the grounding block. From there, I connected the supplied cable to the other end of the grounding block and ran it to the inside wall above the garage door and mounted the antenna there. I used 3m Command adhesive strips and clips to hold the cable to the ceiling and to attach the antenna bracket to the wall. No holes were drilled and everything is easily reversible (should I ever need to do so).
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15 of 17 people found the following review helpful By Ralph Yannayon on October 21, 2011
Garage door opener tech support said the issue was that I had stuff plugged in other outlets on the same circuit that was causing the problem of poor range. I saw no improvement even when I unplugged everything else on the circuit. The extender kit was easy to install. I ran the cable up into the crawl space above my garage and did not have to drill any holes to mount it outside.
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I have a Chamberlain Lift Master garage door opener. The remotes seemed to be working less and less, only opening the garage door when our car was pulled right up to the garage, hitting the button several times, and holding the opener at arms length toward the garage. We tried a new remote control and new batteries, both of which helped, but only for a few weeks, then the same thing happened. I saw the antenna extender as an option and it had great reviews, so I gave it a shot. It works great! Our openers work with a single button press every time and they work 1-2 houses down the street (about 50-100 foot range). The installation was relatively easy, but I thought a little tedious since they send you a coaxial cable with connectors on each end, but you have to cut off one connector, carefully strip the insulation, pull the braided wire away, then pull the inner wire out from the braided wire, then strip more insulation on the inner wire; then strip insulation from the garage antenna wire, connect the two wires, and ground the braided wire. Instructions are clear and easy to follow, but I figured a "kit" would have done half the work for you already.
It says to mount the antenna (included) on the exterior of your house, which means drilling a hole through the garage to pass the coaxial cable. I tried it with the antenna inside the garage, against the exterior wall, and it works great that way. Test it first before doing extra drilling.
I bought my kit from another vendor for a little less than the Amazon price.
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Verified Purchase
Very easy to install, and the range has been extended from perhaps 10 feet to about 50 feet! I'm extremely happy with results and would highly recommend this device.
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