@Ember
Exactly, it’s like a network-enabled keypad. You can control it and get notifications through automation systems. Check the GitHub page for a parts list—it’s mostly cheap components like an ESP32, resistors, and a voltage regulator. If you’re not sure, you can grab an ESP32 online for just a few dollars.
It sounds like they just want to start over and skip using monitoring services for the old system.
Look into Konnected. It’s a good way to add some smart features to your home!
Are you planning to remove everything or just upgrade? If you’re upgrading, keep the wires in the walls—they’re the most valuable part.