SOURCE: My Liftmaster 373LM remote and wireless 377LM Keypad not working
You should have a small wire hanging down from the back of the opener. This is the remote control antenna wire. Strip off about and inch splice a wire to it. The connections is just twisting the wires together. Run the extended wire up to the ceiling and down the wall where the door is located. Most of the time in the top corners where the weather stripping is, there is a small gap. Slip the wire through the gap so the wire extends outside of the door. The key to this is getting the wire outside. 99% of the time this extension of the antenna will be enough to conquer interference issues. You are correct that you are running on 315mhz and the military will not affect it. Let me know if it helps
SOURCE: Liftmaster Professional and Clicker Programming Problems
The Security+ system is a rolling code system and is digital, so it will work with the Homelink in vehicles and with the remote control units that come with the opener. Also with new remotes that are purchased specifically for that opener. Your "clickers" require specific instructions and you need to use the Smart Learn function in order to use them with this opener. In addition, check the Brand Switch settings to be sure they apply to your opener, and the correct Smart Button color on the opener. Read carefully to determine whether you need to set ANY dip switches at all or can you just set them all to off depending on your opener? Check the instructions carefully. Here's a link to the page where you can download a copy of the Clicker instructions if you don't already have it:
. Clicker Model CLT1D Remote Control Owner Manual
The process is simple but too lengthy to post here.
Goto homelink.com
They make the system and have very complete instructions you can download.
PLEASE NOTE: MOST but not ALL Brands / models of opener will work with this system.
Note: when you change the battery you need to reprogram the remote.
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