Which Cisco Aironet Series has a built-in digital thermometer designed to protect the radio?

Which Cisco Aironet Series has a built-in digital thermometer designed to protect the radio?

A.
CiscoAironet 1500 Series

B.
CiscoAironet 1400 Series

C.
CiscoAironet 1200 Series

D.
CiscoAironet 1300 Series