Question about Ecoheat DST Socket thermostat

Yes, it makes a quiet clicking noise, but that doesn't bother me personally. What is a bit less than perfect is the bright status LED that lights up green and red depending on the status. But you can paint over it if that bothers you.

I have three devices that do the same thing. Each one makes a click and whoever is bothered by that should get up and switch on and off by hand. :) .

so it is not completely silent. When it is switched off or on, you hear a soft click of the relay. I personally find it very quiet and would never wake up from the click. But it is definitely not silent.