Can anyone point me in the direction of a product line similar to Nest that:
* does not require internet connectivity
* does not fail if the vendor's online systems fail
* cannot be bricked by the vendor if they decide to stop supporting it
* is secure
Because basically all of the gadgets I'm seeing on the market fail most, if not all of those criteria.
I can just about swallow it if I'm buying a device that won't cause any knock-on problems if it fails. But there's no way I can justifying spending money on a critical part of my home infrastructure if it fails any of those criteria.