Hi,
WRT you question no 2: I used a 4 in long by 1 in wide by 18 guage aluminum strip; drilled a hole near each end. I gave it a slight bend, and with the bottom of the dcs 932l held by the aluminum strip, fastened it with two wood screws to the wall. It was quite secure, and I then aimed it at the thermometer that monitors the temperature in my furnace room.
Regards.
Bob