The manufacturing code is MJ150212083
which I presume is Feb 2015. So looks like very old stock by that re-seller.
I have been trying to calibrating barometric pressure. The manual says...
1. Press BAR
2. Press and release 2ND, then press and hold SET. The barometric pressure variable blinks.
3. Continue holding SET until the Weather Centre reads "SET BAR"
but even after holding for minutes there is no message "SET BAR" I have tried it several times so looks like a faulty unit and a call to Davis tomorrow.
Paul
p.s. jcookjr82 must be glad now that his order wasn't filled