Classic, stable, high quality and reliable product from SONOFF. I got it for a mini automation project I'm planning and it's great. For those who are looking for a little more, the S1/S2 contacts can be bypassed through the application whenever you need it.

I have been using SONOFF intermediate switches for three years now. It is the evolution and the best product so far. It did not raise the temperature and also DOES NOT NEED additional resistors to work. Greek houses have neutral and work just fine. If you make the connection correctly, everything goes smoothly.