I've had two Outdoor Thermocouples go offline in the past six months. It's a nuisance to find a jumper wire, needle nose pliers, or paper clip to short the center hole to the square hole on the PCB. The units seem to have a habit of going offline if there is a power interruption to the hub or there is an internet outage.
I have my router to reset every day at 3 AM and this does not coincide with the outages. I also have the hub running on a UPS so I don't think the problem is power interruption. What else can cause these to go offline?
It would be handy if you included a reset switch on the board.