CraZee
Well-Known Member
This is exactly how I connected my Sonoff SV (with the resistors removed) to my Centurion D5 gate motor:
View attachment 543123
The trick is: the "-" terminals for the relay ("input" and "output") doesn't mean anything -- they're literally just connected to one another. It is the "+" terminals which is actually switched on/off by the relay, and thus you can safely connect those to COM and TRG on the gate board.
Furthermore, the 12v power supply in for my gate motor happily powers the original receiver and the SonoffSV.
You would have to physically isolate the relay from the 220v on the Sonoff Basic to be able to use it for a gate setup. Can probably try and strip the track on the board but I'd rather just use the SV since it is smaller and there should typically be a 12v supply (and it can use 5v and up).
I've managed to hook another one up to my Gemini motor too (well, originally I did, but then I discovered no wifi coverage there, so I moved it to a garage and rather broke open an extra remote and hooked that to the SV -- the SV is powered from an old USB power supply).
On the money