Thermostats. It is a good idea to make sure we save as much energy as possible and thermostats do just that.
With modern technology this can be achieved remotely from your Phone.
A remote temperature monitor is a thermometer that has been upgraded for the internet age. It’s a digital thermometer that tracks ambient changes in temperature. This sensor then streams the temperature data using wireless technology such as WiFi, Bluetooth or GSM. You receive the data via an online service to your computer or tablet, or by cellular service to your cell phone.
A bit out of my depth here so suggest you find a friendly trusted electrician to help out.
There are apparently three main systems (BUZZ words) to look out for –
NEST – HIVE – CONTROL4
That’s enough inside, unless you can tell me more, and please, please, do.