Seems like the op.temp.for the new thin AP's is "higher" then it used to be for AP300 with ext.antennas. Any particular reason for that? What can I offer now in this segment for cold storage environment?                                       cover                    op. temp.

AP300 internal ant.         plastic                  0 C – +40 C

AP300 external ant.        metal                   -20 C – +50 C

AP650 internal ant.         plastic                  0 C – +50 C

AP650 external ant.        metal                    0 C – +50 C

AP621 internal ant.         plastic                   0 C – +40 C

AP621 external ant.        plastic                   0 C – +40 C