I’m a bit disappointed by the Sonoff S26R2-TPE (16A)… I have several S26R2s and they haven’t given me any trouble until now.
It turns out that there is a voltage leak at the output when the output is OFF… very small, but it is there, which causes the set of christmas lights to glow after being turned off, the typical glow is very weak, but it is irritating in a dark room.
It would seem that with a well-designed system, the device should be completely separated in the OFF state, but unfortunately it is not.
I’ll have to experiment with a parallel capacitor, eh…