Centralite keypad sync? Multiple pads

I have 3 Xfinity versions of this keypad.
XHK1-UE
How do I keep them in sync.
One at front door, one at back, one in garage.
They work fine using RM, but do not all have the same display.
For example...
Leave house from front door, arm house. The other pads do not change status, displaying how they were last set.
Come in thru one of the other entrances, if pad is in disarmed, will not disarm the house. I think it does not send code if no change. Or is it my rule and "changed"?

Looking for some advice.
Thanks!

As far as I know the system does not support the Xfinity XHK1-UE keypad.

However, my Nyckelharpa app and keypad driver does support it, although it does require some adjustment to your settings.

The app's text may be somewhat dated, for example HSM now arms with an open device, but it works well on my 2.2.7.126 system.

The keypad works, and seems agreeable with RM.

A horrible thing to say, especially to someone who has written such a highly regarded app... I am trying to avoid HSM. It does not appear to fit my needs.

Although, if that combination will sync the keypads, I can just run with that. I think. Sort of not using it for anything else is a large footprint set of apps, with minimal other benefits. Please tell me I am wrong. So far everything is handled by RM.

Not using HSM for security is similar to reinventing the wheel.

However to each his own.

Understood.
No windows, door sensors are on fridge/freezers.
Motion across 2 acres.
It's the ultimate Florida living... I live outside.
I am using the keypads to set the system to what is appropriate for my occupancy.
I do not know how else to explane it.
Seemed easier to use "2 doors" as opposed to "keypad at parking spot", "keypad in hut", "keypad at bed".
Definitely difficult to fully explain.
I am just trying to figure out how to have the keypads synchronized.

What are you concerned will happen if you use HSM to sync the keypads’ arming state?

Will HSM keep them in sync?

I have two Iris keypads and when I arm HSM, both keypads enter their armed state (AFAIK, I haven’t actually looked at it for quite a while).

Edit: I haven’t had a specific need for @arnb’s Nickelharpa app, but it sounds like it’ll do the same thing for your xfinity keypads, from what he mentioned.

Then the footprint is worth it!
I am sure that I will find it and NH usefull.

If your concern is primarily related to hub resources, speed of automation processing etc., it’s unlikely that installing HSM and Nickelharpa will cause any performance issues.

If I could just clarify one thing (purely to satisfy my own curiosity, so feel free to ignore). You don’t live in a house? What kind of structure do you live in? It sounds like you have electricity at least.

The ultimate in Florida living, a hut in my in-laws back yard. Wife is caring for her parents. Then covid. I work in multifamily housing. Interact with many people, some of them polite and will tell you they have/been exposed, some not.
Safer to just enjoy the weather.
Xfinity sensors/components left when tenants move out, a gold mine!
Have to have electricity, how else to watch for hurricanes!