The build date on this is June 9, 2016 which is given by the serial number AR160609034. YET the SIM firmware is 2.0 which means that it has a SHT-11 instead of a SHT-31 installed also "AR" means systems with the SHT-11 chip, so far as I recall. This was not a misprint, I checked the sensor and indeed it is SHT-11.
For months now I have been getting a
solid supply of SIM firmware 2.5 wireless units for all pro2 flavors. All of a sudden I get a batch of 6163 units with a
new build date but reverted 2.0 SIM firmware. I am wondering if they are having a supply problem with the SHT-31 chip
. I think the general consensus is that most people are liking the SHT-31 changeover.
I have contacted Davis about this to see what is going on. I will post here if I get a response.