Everything About Garage Door Openers

Garage door openers have been used for a long time. But to be honest what is a garage door opener without a remote? If there the weather is awful, you still have to get out of the car to open the garage door, if you don’t have a remote. That’s why remotes for garage door openers were invented, to make the life of the user more comfortable.

The first remote systems, which were manufactured, were very simple. You just needed a transmitter and a receiver and that’s all. On the selected frequency the transmitter would send the signal, the receiver would process it and the garage door would have closed or opened, depending on the position. After a while, more and more people got a garage door opener and even if the remote wasn’t very powerful and hadn’t a long range you could still accidentally open your neighbor’s garage door.

Something had to be done about this and after a while the new remote systems came out. A digital code was preset using a dip switch on the receiver as well as on the transmitter. Using this system your garage door opener would have 256 different codes, but nobody thought about security until a house was robbed. Thieves could steal the code using a device called the code grabber. At one point these devices were very easy to find and if a thief had the required code he could easily open the garage door. That’s why, again, changes had to be made.

Nowadays the remote systems are equipped with a code rolling system. That means that every time you use the remote the code will change. A thief can still steal the code, but he can do nothing with it, because he stole the code that was changed and even if you think that he might try to steal all the codes, I don’t think he will. Because most code rolling systems have a few billions of possibilities. The spectrum of today’s remotes is between 300 and 400 MHz. Another thing that might happen is that someone could accidentally change the code using a remote for their own garage door opener. You don’t have to worry about that either, the system saves lock-a-head codes in case this happens.

Earlier it was really unsafe to get a remote controlled garage door opener, but now it is completely safe. It is impossible for someone to copy all the codes!