I have connection with my temp. TH01 sonoff but I cannot see the connection line
Perhaps too late for many, but nevertheless I’ll post my outcome troubleshooting one of the Sonoff DS01 connection issues I had.
Check the clip that holds the battery for it to be too wide, so the clip doesn’t connect correctly to the + and the - side. Just gently press the clip without the battery in it.
When the clip is adjusted correctly, a red led will be lit on the bottom side of the PCB for each time the DS01 is in state closed or open.
I hope this may help others troubleshooting their Sonoff DS01.
/m4v3r1ck