The last time it did it i ran outside to see my neighbor with his garage door remote in hand.
Neighbor has same garage door frequency.
The first to activate the door is acknowledged and the other frequencies are ignored.
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.
So it seemed that my garage door was magically opening itself throughout the day.
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.
However if there is a new frequency then you may need to speak to a garage door repair service to relocate your receiver or fit a plastic casing.
Garage door opener remotes work on radio frequency waves typically from ranges of 300mhz to 390mhz.
As the automobile became more popular the garage became a building of its own.
With newer openers say in the past 25 years or so they use a rolling code so it is nearly impossible for your neighbour to accidentally have the same remote code as you.
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.
The frequency may need to be changed for various environmental reasons such as radio interference or a neighbor with the same garage remote frequency.
It s highly unlikely that radio frequency interference would be coming across all three frequencies at once.
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.
This is an updated version of an article originally posted on july 31 2014.
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.
Johnson founder of overhead doors invented the automatic electric garage door in 1926.
Newer remotes and openers use rolling frequencies so this unusual garage door activity won t happen with those.
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.
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.
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.
Older openers used simple radio frequency remotes so it was very possible for someone else to open your garage.
