Neo Coolcam w/pigtail. Its pigtail sensor allows multiple different use-cases for placement of the main puck and the remote sensor, and @kkossev's excellent driver is available.
You can even extend the pigtail sensor length if you need a longer run using a cheap 2.5mm audio cable extender (I added a 25' cable to mine to reach a remote steam generator in the attic). Available on Walmart and Ali:
Drivers:
