Johnson founder of overhead doors invented the automatic electric garage door in 1926.
Neighbor has same garage door frequency.
If your neighbors garage door remote is opening your garage door the first thing to do is reset the codes using the dip switches or learn button.
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.
Your garage door is likely using a frequency clustered around the 2 4 ghz band that s been designated the ism band otherwise known as the industrial scientific and medical band.
Surprisingly changing remotes can prevent this inconvenience.
If this does not fix the situation then you may need to replace the garage door opener or the circuit board to get to a different frequency.
So it seemed that my garage door was magically opening itself throughout the day.
The frequency may need to be changed for various environmental reasons such as radio interference or a neighbor with the same garage remote frequency.
The last time it did it i ran outside to see my neighbor with his garage door remote in hand.
The garage door opener remote which uses a radio frequency signal to open and close the automatic door brought even more convenience to the automobile owner.
This will now make your garage door opener smart and you now have the ability to monitor open and close your garage door with your smartphone something you always have with you and no need for a garage door opener remote.
Newer remotes and openers use rolling frequencies so this unusual garage door activity won t happen with those.
The purpose of this is to ensure that your garage door opener s frequency doesn t interfere with your neighbor s favorite radio station or the airplane flying overhead.
Older openers used simple radio frequency remotes so it was very possible for someone else to open your garage.
The first to activate the door is acknowledged and the other frequencies are ignored.
It s highly unlikely that radio frequency interference would be coming across all three frequencies at once.
Garage door opener remotes work on radio frequency waves typically from ranges of 300mhz to 390mhz.
This is an updated version of an article originally posted on july 31 2014.
When a neighbor has the same garage door frequency as you his or her garage door will respond to the same command to open or close.
On these older remotes the frequency options are limited and it is not that rare for a neighbor to set his garage door opener frequency to yours quite.
It s the pre 1993 openers that have remotes that allow you to set and change your frequency.
