The simplest form of access control for any automated system, let alone gates, this I.P rated switch is very popular.

A simple press of the button activates your gates, barrier, bollard…etc.  and depending on how you want the switch to operate, it can be wired as open, stop, close or as a straightforward open command.

Many gate automation systems have this button hidden out of site, so only people that know where the switch is can activate the system.