Automatic door closer

I have a man door in my garage that I would like to automate. This door is often open during the day, and closed at night, where it is then locked. It looks like I can use an automatic closing mechanism like this:

And something like this to keep it open:

I already have one of these with one relay available:

I am not set on any of these devices - except probably the relay.
I have Zigbee, Zwave, ethernet, WiFi and a HE hub in the garage, so connectivity isn't an issue.
Suggestions? Alternatives?