I would like to replace normal (mechanical) switches at home with Sonoff Touch ones, which I will be able to manage.

Today I have this:

enter image description here

and by adding the Sonoff Touch I will have that (P1 is the WiFi module, the whole dashed box is the Sonoff Touch):

enter image description here

The concern I am having is that the lamp(s) which are in series with the switch will lower the voltage on the switch. I do not know yet by how much.

Are there practical indication on the voltage range required by a Sonoff Touch to function properly? (the documentation mentions 90~250V AC, I am more looking at some experience based cases)

Circuit schematics thanks to CircuitLab

  • your proposed circuit will mean the light is on all the time – Jaromanda X Mar 23 '18 at 22:55
  • @JaromandaX: I hope the current drawn by the WiFi module will be very small, probably too small to light the bulb – WoJ Mar 25 '18 at 20:23
  • True, didn't consider that – Jaromanda X Mar 25 '18 at 22:54

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