ITEAD Customer Care Center

Goodmorning, I want to add a rf module on a sonoff SV. I see that It have 9 pin free on board and the module rf (sonoff) have the same pin. I try to add one of this module but the SV don't work. The module rf work, the led blink when i push the button on controller, but the delay don't work. Same guys can help me? Thank you