As part of my determination to eliminate difficult to access battery powered devices, I have been relentlessly searching for a plug powered water leak detector with a detection rope.
The Homeseer FS100-W meets the need, except that it is no longer sold. However, it is really just an FS100+ which becomes a FS100-W when a leak detection rope is plugged in, and a FS100-L when the light detection rope is plugged in, both via a 3.5mm jack.
Since The FS100-L's are marked down to $9.50 each, I bought several.
I also bought a detection rope with 3.5mm jack on Amazon.
https://www.amazon.com/Sensor-Cable-YoLink-Water-Leak/dp/B0BLYTYSCD?ref_=ast_sto_dp&th=1
HOWEVER, I've discovered that the FS100+ requires what I think is a TRRS 3.5mm plug, while the detection rope has what I think is a TRS 3.5mm jack.
So the question for the smart electronics gurus here is: Will a TRS (F) to TRRS (M) adapter allow this setup to work? The pinout for the original HS rope detector is described in post 12 on this thread: HS-FS100-W Water Sensor - HomeSeer Message Board
I'm not sure of the pinout of the Yolink detection rope, but ALL the detection ropes I can find are TRS, so I'm going to guess they are all pinned the same.