I’ve been low-key fighting with my crawlspace dehumidifier’s sump pump trying to get it to self-siphon once the motor stops to keep draining the rest of the sump and mostly further clear the line. I finally did it!
FWIW there wasn’t a lot of vertical space to work with and the horizontal distance was over 20ft.
6" Extension cord. Just so it hangs below the I-beam instead of literally tucked inside the I and shielding it from like 75% of the house. Even the multi sensor 3ft away, but on the other side of the beam would rather talk to other nodes!