Thanks for the quick and complete answer. this helps tremendously.

Hi,

My domoticz installation received quit a large number of divices from my RFlink hardware (>3000) that are not mine and I think this makes my domotics slow. For instance when accessing the list of divices.

is there a problem executing "delete from DeviceStatus where used =0" on the database to ...

I was wondering if it would be doable to build a virtual thermostat in domoticz?

So: have a “device” on the dashboard (one per room) Where you can set the set point temperature, configure a temperature sensor for it to get the actual temperature of the room, and have that thermostat control a ...