Took a slightly different approach for my gate, about a decade ago. Took apart one of the RF controller fobs, and wired it using a cheap relay from Aliexpress,

Took a slightly different approach for my gate, about a decade ago. Took apart one of the RF controller fobs, and wired it using a cheap relay from Aliexpress, and hooked it up to a Rpi's GPIO pins. Wrote a simple python code to control the open/close using the WiringPi library, with Alexa control achieved via the HA Bridge open source Philips HUE bridge software. Added Siri/Homekit control using HomeBridge. Recently added two cheap outdoor cameras from Aliexpress with HLS streaming capabilities (and PoE) and wrote a simple iOS app that offers two different views (inside and outside gate), with a simple toggle button to open/close the gate. Backend hosted on a cheap $8 per month OVH instance with secure Tailscale access to the Rpi at home. This way, I can monitor my gate remotely from anywhere and open/close as required.