Nictrix said:
Questions I have about all these auto light things, these things are plugged in all the time and switched on therefor do they just act like an old timer and are constantly using electricity 24 hours a day.
How much electricity do these use on a daily basis and how much does it cost to run them?
If you have a dozen of these around your house will it end up costing you hundreds of pounds a year just to save you flicking a switch?
I have about 30 "Lightwaverf" devices throughout the house, http://www.lightwaverf.com/solution/smart-home/
My system comprises replacement double sockets, light switches, a couple of inline switches, and 8 TRV's (thermostatic radiator valves)
I REALLY like the system, and it's compatible with the Amazon echo/dot. At the moment, it's all controlled from my android phone.
There is a small hub connected to my router that controls everything, which uses about 3 watts continuously, the sockets less than 0.2w each according to the specs.
I have it set to turn off the kids TV's at a set time on school nights! It also turns off the radiators in all of the bedrooms once they have gone to school, turning them back on 30 mins before they arrive home. Have only had the rad valves for a couple of months, so not sure of the savings yet, but when you consider that supposedly, 78% of the average uk home's energy use goes on heating, then having over half the radiators turned off for a significant portion of the day should make a decent impact on that.
It's also quite clever, as for instance my teenage daughter likes to open both sets of windows in her room, even in the winter but they now have magnetic triggers fitted to them, which turn off the radiators in her room and ensuite, turning them back on once she closes the windows. In the past the TRV's in her room would simply turn the radiators fully on to try and combat the heat loss, and literally throw money out of those open windows.
It also controls my outside lighting on dawn/dusk timers.
Just ordered a couple of "Dots" as a little treat for myself
Mike