There are 2 main types of above ground gate automation kits: Ram arms or Articulated gate arms
In order to mount a ram arm and achieve the straight line geometry required, the gates must be hung to the back of the gate posts or pillars.
If the gate hinges are in the centre or the front edge of the posts or pillars, then it is not possible to use a ram arm (without significant and unsightly modifications). In these situations, the best type of arm to use is an articulated gate arm.
These motors are very strong and usually used where you have a large brick gate post , so normally the post is too big for a standard swing motor kit mounting.
These are electric mains powered units,
Swing gate weight 250-350kgs
Gate width 2.5-3.5m