In the case of companies like Viking Gate operators, the electric door openers Osco and Elite can also provide you with several choices that you cannot find if your search is strictly limited.
First of all, the operation of the opener itself must be decided. Most will be swinging gates, but a slide gate may be the best one for you if you have a horizontal room available.
It is also important to consider the type of auto gate operator used in opening a swing gate. A swing gate operator can be in a form of a mechanical swing arm motor or hydraulic operator.