A cordless or cellular phone an am of fm radio or any electrical equipment that uses a radio signal to operate.
Garage door opener radio interference.
Unfortunately if the control panel for your garage door opener is older it may be more prone to radio frequency interference.
First you have to identify what is causing the interference.
Interference can be caused by any unwanted radio signal.
Generally when it comes to garage door openers it s ensuring that you use a professional garage door service to minimize this from happening.
If this is the case a new control panel may be your best bet.
The genie girud 1t universal conversion kit was made to fix this issue.
Some garage door openers may only work on a single frequency this kit is a dual frequency upgrade so if there is frequency interference on the 390mhz most commonly used in garage door openers then it will automatically switch to a 315mhz.
The location of the garage door openers signal may be blocked by some of the other devices in your home running on the same frequency.