I purchased a few more of those sensors today and came across a few issues.
- There are different models, the are similar, but the electronics is different.
- The model I had originally had different channels listed, but the store only had 3 channels.
- Seems like they cannot properly share ground so the receiver and NodeMCU has to be independently powered.
Also following up with the new printer, it seems to work well.
Finally, as I type I have a massive headache. I think it is due to lack of sleep and dehydration. I will drink some water and go to bed early.