I’m starting to use Homey as a alarm system as well. Within my fuse box I have a UPS powering the router, accesspoint, etc. Homey is the central hub for all devices and I want it to keep working in case of a power failure as well. All alarm nodes are mainly battery powered anyway.
My idea is to buy a powerbank and have it always plugged in. The powerbank output will then be connected to homey… and instant cheap UPS function would be added.
But will that work? Are there any requirements to the powerbank? I don’t want to blow up my homey until backup and restore is in place
I would still have a problem with the Z-Wave repeaters. I currently use the fibaro wall sockets simply to create a more extended Z-Wave network, I don’t have anything plugged into them, but in case of power failure those will no longer work so half of the devices will become unavailable, but figuring that out would be part two of the plan.