Your Level of Use
The amount of times your gate is used per day is a determining factor when deciding on the right motor for your usage. Motors are designed to operate within a certain capacity (operations per day) so choosing a motor compatible with your desired use is essential for its durability.
The level of use will also determine the type of power output for your installation. There are two types of power outputs to consider - 24v & 230v. If you need a high number of operations (opened/closed more than 5-6 times in an hour) then you may wish to consider a 24v system.
24v systems are more suitable for higher operation levels as they tend to run cooler than 230v gate motors. However, they do cost more in relative terms, so if you only need to open or close the gate 1-5 times an hour then a 230v system might prove more cost-efficient.
24v motors tend to be used on commercial premises, whereas 230v tend to be used on standard domestic properties. The exception to this rule is sliding gate motors where the reverse is true - 24v sliding gate automation systems tend to be for domestic use, 230v for more intense use (commercial/communal).
24v systems can draw power from battery backup systems meaning they can still operate during any mains power cut (a 230v or 3 phase system would need to be opened with a manual release key).