Interference can be caused by any unwanted radio signal.
Garage door opener radio interference.
For instance the liftmaster 888lm offers the ability to monitor and control your garage door right from your smartphone including the opener lights and more.
If this is the case a new control panel may be your best bet.
A cordless or cellular phone an am of fm radio or any electrical equipment that uses a radio signal to operate.
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.
Aside from household appliance being housed near a cell phone tower or airports can also cause interference to your garage door opener.
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.
Radio frequency interference with garage door openers can be avoided.
Unfortunately if the control panel for your garage door opener is older it may be more prone to radio frequency interference.