It was actually synced before hand because the SMAN4 remembers the last ET2W it was synced with. So it looks like the ET2W was on but the ATH4 was off. The signal probably just interrupted for that split second or it could be i switched from AC to DC as i was moving it.
I don't suppose there is any way to switch between WB temperatures for multiple indoor units is there?
Most of my residential maintenance customers have multiple systems.
I'd love to be able to leave a WB temp transmitter on each one as I check the indoor units, then have live WB readings when I go to check the outdoor units, then go back and collect all of the WB transmitters in one go.
Multiple trips in and out to move transmitters around isn't something I'm willing to do though.
I'm not even sure the transmitters have the range for what I'd like to be able to do, damn FCC.
If more government is the answer, then it's a really stupid question.