Thanks to their more straightforward construction, swing gates generally cost less than sliding gates, though this largely depends on the size, style, and material of the gate in question.
Automatic swing gates operate by two gates that meet in the middle. Both side open to the inside of the property when they receive an authentic signal from a remote control (for example).
Automatic swing gates usually open inwards towards the property. There are exceptions to this rule though. For example, an uphill driveway means they might open outwards instead, providing the gates remain inside your property boundary.